Fix crash related to unpause being called after stop

src/android/app/src/main/java/org/citra/citra_emu/activities/EmulationActivity.java

@@ -229,9 +229,9 @@ public final class EmulationActivity extends AppCompatActivity {
                     finish();
                 })
                 .setNegativeButton(android.R.string.cancel, (dialogInterface, i) ->
-                {
-                }).setOnDismissListener(dialogInterface ->
-                NativeLibrary.UnPauseEmulation())
+                    NativeLibrary.UnPauseEmulation())
+                .setOnCancelListener(dialogInterface ->
+                    NativeLibrary.UnPauseEmulation())
                 .create()
                 .show();
     }

src/android/app/src/main/jni/native.cpp

@@ -333,6 +333,7 @@ jobjectArray Java_org_citra_citra_1emu_NativeLibrary_GetInstalledGamePaths(
     return jgames;
 }
 
+// TODO(xperia64): ensure these cannot be called in an invalid state (e.g. after StopEmulation)
 void Java_org_citra_citra_1emu_NativeLibrary_UnPauseEmulation(JNIEnv* env,
                                                               [[maybe_unused]] jclass clazz) {
     pause_emulation = false;