Use #ifdef/#ifndef instead of #if defined/#if \!defined

test/testgles2.c

@@ -893,7 +893,7 @@ int main(int argc, char *argv[])
         SDL_Log("%2.2f frames per second\n",
                 ((double)frames * 1000) / (now - then));
     }
-#if !defined(__ANDROID__)
+#ifndef __ANDROID__
     quit(0);
 #endif
     return 0;