Fixed compile warning

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404439

src/video/SDL_video.c

@@ -2711,7 +2711,6 @@ void
 SDL_DestroyRenderer(SDL_Window * window)
 {
     SDL_Renderer *renderer;
-    int i;
 
     if (!window) {
         return;