Fixed compiler warning on Android
diff --git a/src/core/android/SDL_android.c b/src/core/android/SDL_android.c
index 096770d..c493a8d 100644
--- a/src/core/android/SDL_android.c
+++ b/src/core/android/SDL_android.c
@@ -21,6 +21,7 @@
#include "../../SDL_internal.h"
#include "SDL_stdinc.h"
#include "SDL_assert.h"
+#include "SDL_hints.h"
#include "SDL_log.h"
#ifdef __ANDROID__