Fix the build from 887d2b64

Thanks to all the include frobbing, GLuint is not known in some places
that included enums.h.

src/mesa/main/enums.c

@@ -6268,7 +6268,7 @@ static const char *prim_names[PRIM_UNKNOWN + 1] = {
  * GL_FALSE/GL_POINTS ambiguity and others.
  */
 const char *
-_mesa_lookup_prim_by_nr(GLuint nr)
+_mesa_lookup_prim_by_nr(unsigned nr)
 {
    if (nr < Elements(prim_names))
       return prim_names[nr];

src/mesa/main/enums.h

@@ -45,7 +45,7 @@ extern const char *_mesa_lookup_enum_by_nr( int nr );
 /* Get the name of an enum given that it is a primitive type.  Avoids
  * GL_FALSE/GL_POINTS ambiguity and others.
  */
-const char *_mesa_lookup_prim_by_nr( GLuint nr );
+const char *_mesa_lookup_prim_by_nr( unsigned nr );
 
 extern int _mesa_lookup_enum_by_name( const char *symbol );