Revert context due to lack of improvement

shell/android-studio/reicast/src/main/java/com/reicast/emulator/emu/GL2JNIView.java

@@ -640,7 +640,7 @@ public class GL2JNIView extends GLSurfaceView
             handler.post(new Runnable() {
                 public void run() {
                     Log.d(context.getPackageName(), msg);
-                    Toast.makeText(context.getApplicationContext(), msg, Toast.LENGTH_SHORT).show();
+                    Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
                 }
             });
         }