[Android] Handle native thread finishing when not commanded from the Java side

test/testjoystick.c

@@ -287,11 +287,6 @@ main(int argc, char *argv[])
     }
     SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK);
 
-#ifdef ANDROID
-    exit(0);
-#else
-    return 0;
-#endif
 }
 
 #else