Prevent shadowing static variable '_this' with local paramter '_this' of SDL_CreateWindowTexture

src/video/SDL_video.c

@@ -128,8 +128,6 @@ static VideoBootStrap *bootstrap[] = {
     NULL
 };
 
-static SDL_VideoDevice *_this = NULL;
-
 #define CHECK_WINDOW_MAGIC(window, retval) \
     if (!_this) { \
         SDL_UninitializedVideo(); \
@@ -288,6 +286,8 @@ SDL_CreateWindowTexture(SDL_VideoDevice *_this, SDL_Window * window, Uint32 * fo
     return 0;
 }
 
+static SDL_VideoDevice *_this = NULL;
+
 static int
 SDL_UpdateWindowTexture(SDL_VideoDevice *unused, SDL_Window * window, const SDL_Rect * rects, int numrects)
 {