Fixed bug 3746 - remove SDLCALL attribute from SDL_BlitFunc() funcptr

Ozkan Sezer

The attached patch removes SDLCALL attribute from SDL_BlitFunc() funcptr.

As far as I can see, *SDL_BlitFunc() is completely internal to SDL with
no specific calling convention requirements.  The actual functions assigned
to SDL_BlitFunc seem to not have any calling conventions specified. So,
easy solution is simply removing the strict calling convention from the
type.

src/video/SDL_blit.h

@@ -70,7 +70,8 @@ typedef struct
     Uint8 r, g, b, a;
 } SDL_BlitInfo;
 
-typedef void (SDLCALL * SDL_BlitFunc) (SDL_BlitInfo * info);
+typedef void (*SDL_BlitFunc) (SDL_BlitInfo *info);
+
 
 typedef struct
 {