update SDL soruce to 2.0.14

Edward Rudd

2021-06-15 dec7875a6e23212021e4d9080330a42832dfe02a

 source/src/video/android/SDL_androidvideo.h

@@ -38,6 +38,7 @@
    SDL_Rect textRect;
    int      isPaused;
    int      isPausing;
    int      pauseAudio;
} SDL_VideoData;

extern int Android_SurfaceWidth;