Android active driver check (#6850)

Check if a driver is active before attempting to handle the devices.
Otherwise an assertion will fail.

src/core/android/SDL_android.c

@@ -940,19 +940,23 @@ JNIEXPORT void JNICALL
 SDL_JAVA_AUDIO_INTERFACE(addAudioDevice)(JNIEnv *env, jclass jcls, jboolean is_capture,
                                          jint device_id)
 {
+    if (SDL_GetCurrentAudioDriver() != NULL) {
         char device_name[64];
         SDL_snprintf(device_name, sizeof(device_name), "%d", device_id);
         SDL_Log("Adding device with name %s, capture %d", device_name, is_capture);
         SDL_AddAudioDevice(is_capture, SDL_strdup(device_name), NULL, (void *)((size_t)device_id + 1));
     }
+}
 
 JNIEXPORT void JNICALL
 SDL_JAVA_AUDIO_INTERFACE(removeAudioDevice)(JNIEnv *env, jclass jcls, jboolean is_capture,
                                             jint device_id)
 {
+    if (SDL_GetCurrentAudioDriver() != NULL) {
         SDL_Log("Removing device with handle %d, capture %d", device_id + 1, is_capture);
         SDL_RemoveAudioDevice(is_capture, (void *)((size_t)device_id + 1));
     }
+}
 
 /* Paddown */
 JNIEXPORT jint JNICALL SDL_JAVA_CONTROLLER_INTERFACE(onNativePadDown)(