fix: don't crash if fail to unregister callback because key mapper is dead

Author: sds100

app/src/main/java/io/github/sds100/keymapper/inputmethod/latin/KeyEventRelayServiceWrapper.kt

@@ -45,8 +45,12 @@ class KeyEventRelayServiceWrapperImpl(
 
             override fun onServiceDisconnected(name: ComponentName?) {
                 synchronized(keyEventRelayServiceLock) {
-                    keyEventRelayService?.unregisterCallback()
-                    keyEventRelayService = null
+                    try {
+                        keyEventRelayService?.unregisterCallback()
+                    } catch (_: DeadObjectException) {
+                    } finally {
+                        keyEventRelayService = null
+                    }
                 }
             }
         }

app/src/main/java/io/github/sds100/keymapper/inputmethod/latin/LatinIME.java

@@ -222,7 +222,7 @@ public void onReceive(Context context, Intent intent) {
     private KeyEventRelayServiceWrapperImpl mKeyEventRelayServiceWrapperRelease;
     private KeyEventRelayServiceWrapperImpl mKeyEventRelayServiceWrapperDebug;
     private KeyEventRelayServiceWrapperImpl mKeyEventRelayServiceWrapperCi;
-    private IKeyEventRelayServiceCallback mKeyEventRelayServiceCallback = new IKeyEventRelayServiceCallback.Stub() {
+    private final IKeyEventRelayServiceCallback mKeyEventRelayServiceCallback = new IKeyEventRelayServiceCallback.Stub() {
         @Override
         public boolean onKeyEvent(KeyEvent event, String sourcePackageName) {
             InputConnection ic = getCurrentInputConnection();