ui: Replace ErrorMessages getter with indexing operator

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

ui/src/main/java/com/wireguard/android/activity/LogViewerActivity.kt

@@ -185,7 +185,7 @@ class LogViewerActivity : AppCompatActivity() {
                     saveButton?.isEnabled = true
                     Snackbar.make(findViewById(android.R.id.content),
                             if (exception == null) getString(R.string.log_export_success, outputFile?.fileName)
-                            else getString(R.string.log_export_error, ErrorMessages.get(exception)),
+                            else getString(R.string.log_export_error, ErrorMessages[exception]),
                             if (exception == null) Snackbar.LENGTH_SHORT else Snackbar.LENGTH_LONG)
                             .setAnchorView(binding.shareFab)
                             .show()

ui/src/main/java/com/wireguard/android/activity/TunnelToggleActivity.kt

@@ -32,7 +32,7 @@ class TunnelToggleActivity : AppCompatActivity() {
 
     private fun onToggleFinished(throwable: Throwable?) {
         if (throwable == null) return
-        val error = ErrorMessages.get(throwable)
+        val error = ErrorMessages[throwable]
         val message = getString(R.string.toggle_error, error)
         Log.e(TAG, message, throwable)
         Toast.makeText(this, message, Toast.LENGTH_LONG).show()

ui/src/main/java/com/wireguard/android/fragment/AppListDialogFragment.kt

@@ -42,7 +42,7 @@ class AppListDialogFragment : DialogFragment() {
                 appData.clear()
                 appData.addAll(data)
             } else {
-                val error = ErrorMessages.get(throwable)
+                val error = ErrorMessages[throwable]
                 val message = activity.getString(R.string.error_fetching_apps, error)
                 Toast.makeText(activity, message, Toast.LENGTH_LONG).show()
                 dismissAllowingStateLoss()

ui/src/main/java/com/wireguard/android/fragment/BaseFragment.kt

@@ -87,7 +87,7 @@ abstract class BaseFragment : Fragment(), OnSelectedTunnelChangedListener {
     private fun setTunnelStateWithPermissionsResult(tunnel: ObservableTunnel, checked: Boolean) {
         tunnel.setStateAsync(Tunnel.State.of(checked)).whenComplete { _, throwable ->
             if (throwable == null) return@whenComplete
-            val error = ErrorMessages.get(throwable)
+            val error = ErrorMessages[throwable]
             val messageResId = if (checked) R.string.error_up else R.string.error_down
             val message = requireContext().getString(messageResId, error)
             val view = view

ui/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.kt

@@ -46,7 +46,7 @@ class TunnelEditorFragment : BaseFragment(), AppExclusionListener {
             Toast.makeText(requireContext(), message, Toast.LENGTH_SHORT).show()
             onFinished()
         } else {
-            val error = ErrorMessages.get(throwable)
+            val error = ErrorMessages[throwable]
             message = getString(R.string.config_save_error, savedTunnel.name, error)
             Log.e(TAG, message, throwable)
             binding?.let {
@@ -114,7 +114,7 @@ class TunnelEditorFragment : BaseFragment(), AppExclusionListener {
             val newConfig = try {
                 binding!!.config!!.resolve()
             } catch (e: Exception) {
-                val error = ErrorMessages.get(e)
+                val error = ErrorMessages[e]
                 val tunnelName = if (tunnel == null) binding!!.name else tunnel!!.name
                 val message = getString(R.string.config_save_error, tunnelName, error)
                 Log.e(TAG, message, e)
@@ -179,7 +179,7 @@ class TunnelEditorFragment : BaseFragment(), AppExclusionListener {
             Toast.makeText(requireContext(), message, Toast.LENGTH_SHORT).show()
             onFinished()
         } else {
-            val error = ErrorMessages.get(throwable)
+            val error = ErrorMessages[throwable]
             message = getString(R.string.tunnel_create_error, error)
             Log.e(TAG, message, throwable)
             binding?.let {
@@ -198,7 +198,7 @@ class TunnelEditorFragment : BaseFragment(), AppExclusionListener {
             Log.d(TAG, "Attempting to save config of renamed tunnel " + tunnel!!.name)
             renamedTunnel.setConfigAsync(newConfig).whenComplete { _, t -> onConfigSaved(renamedTunnel, t) }
         } else {
-            val error = ErrorMessages.get(throwable)
+            val error = ErrorMessages[throwable]
             message = getString(R.string.tunnel_rename_error, error)
             Log.e(TAG, message, throwable)
             binding?.let {

ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.kt

@@ -235,7 +235,7 @@ class TunnelListFragment : BaseFragment() {
         if (throwable == null) {
             message = resources.getQuantityString(R.plurals.delete_success, count, count)
         } else {
-            val error = ErrorMessages.get(throwable)
+            val error = ErrorMessages[throwable]
             message = resources.getQuantityString(R.plurals.delete_error, count, count, error)
             Log.e(TAG, message, throwable)
         }
@@ -245,7 +245,7 @@ class TunnelListFragment : BaseFragment() {
     private fun onTunnelImportFinished(tunnels: List<ObservableTunnel>, throwables: Collection<Throwable>) {
         var message = ""
         for (throwable in throwables) {
-            val error = ErrorMessages.get(throwable)
+            val error = ErrorMessages[throwable]
             message = getString(R.string.import_error, error)
             Log.e(TAG, message, throwable)
         }

ui/src/main/java/com/wireguard/android/preference/ModuleDownloaderPreference.kt

@@ -34,7 +34,7 @@ class ModuleDownloaderPreference(context: Context, attrs: AttributeSet?) : Prefe
         when {
             throwable != null -> {
                 setState(State.FAILURE)
-                Toast.makeText(context, ErrorMessages.get(throwable), Toast.LENGTH_LONG).show()
+                Toast.makeText(context, ErrorMessages[throwable], Toast.LENGTH_LONG).show()
             }
             result == OsConstants.ENOENT -> setState(State.NOTFOUND)
             result == OsConstants.EXIT_SUCCESS -> {

ui/src/main/java/com/wireguard/android/preference/ZipExporterPreference.kt

@@ -63,7 +63,7 @@ class ZipExporterPreference(context: Context, attrs: AttributeSet?) : Preference
 
     private fun exportZipComplete(filePath: String?, throwable: Throwable?) {
         if (throwable != null) {
-            val error = ErrorMessages.get(throwable)
+            val error = ErrorMessages[throwable]
             val message = context.getString(R.string.zip_export_error, error)
             Log.e(TAG, message, throwable)
             Snackbar.make(