SDL_ConvertPixels() returns 0 on success

include/SDL_surface.h

@@ -355,6 +355,8 @@ extern DECLSPEC SDL_Surface *SDLCALL SDL_ConvertSurfaceFormat
 
 /**
  * \brief Copy a block of pixels of one format to another format
+ *  
+ *  \return 0 on success, or -1 if there was an error
  */
 extern DECLSPEC int SDLCALL SDL_ConvertPixels(int width, int height,
                                               Uint32 src_format,

src/video/SDL_surface.c

@@ -952,7 +952,7 @@ int SDL_ConvertPixels(int width, int height,
             src = (Uint8*)src + src_pitch;
             dst = (Uint8*)dst + dst_pitch;
         }
-        return SDL_TRUE;
+        return 0;
     }
 
     if (!SDL_CreateSurfaceOnStack(width, height, src_format, (void*)src,