Fixed bug 5235 - All internal sources should include SDL_assert.h

Ryan C. Gordon

We should really stick this in SDL_internal.h or something so it's always available.

src/SDL_dataqueue.c

@@ -18,11 +18,10 @@
      misrepresented as being the original software.
   3. This notice may not be removed or altered from any source distribution.
 */
-
 #include "./SDL_internal.h"
+
 #include "SDL.h"
 #include "./SDL_dataqueue.h"
-#include "SDL_assert.h"
 
 typedef struct SDL_DataQueuePacket
 {