Eliminate a warning in a failure case.

third_party/mesa/MesaLib/src/mapi/glapi/glapi_dispatch.c

 /*
  * Mesa 3-D graphics library
  * Version:  6.3
  *
  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
@@ skipping 47 matching lines @@
 #define NAME(func)  gl##func
 #endif
 
 #if 0  /* Use this to log GL calls to stdout (for DEBUG only!) */
 
 #define F stdout
 #define DISPATCH(FUNC, ARGS, MESSAGE)           \
    fprintf MESSAGE;                             \
    CALL_ ## FUNC(GET_DISPATCH(), ARGS);
 
-#define RETURN_DISPATCH(FUNC, ARGS, MESSAGE)    \
+#define RETURN_DISPATCH(TYPE, FUNC, ARGS, MESSAGE)      \
    fprintf MESSAGE;                             \
    return CALL_ ## FUNC(GET_DISPATCH(), ARGS);
 
 #else
 
 #define DISPATCH(FUNC, ARGS, MESSAGE)           \
    CALL_ ## FUNC(GET_DISPATCH(), ARGS);
 
-#define RETURN_DISPATCH(FUNC, ARGS, MESSAGE)    \
+#define RETURN_DISPATCH(TYPE, FUNC, ARGS, MESSAGE)      \
    return CALL_ ## FUNC(GET_DISPATCH(), ARGS);
 
 #endif /* logging */
 
 
 #ifndef GLAPIENTRY
 #define GLAPIENTRY
 #endif
 
 #ifdef GLX_INDIRECT_RENDERING
 /* those link to libglapi.a should provide the entry points */
 #define _GLAPI_SKIP_PROTO_ENTRY_POINTS
 #endif
 #include "glapi/glapitemp.h"
 
 #endif /* USE_X86_ASM */