Build fix for -Werror=int-to-pointer-cast -Werror=pointer-to-int-cast

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>

src/mesa/drivers/dri/r200/r200_tcl.c

@@ -218,8 +218,8 @@ static void r200EmitPrim( struct gl_context *ctx,
 #ifdef MESA_BIG_ENDIAN
 /* We could do without (most of) this ugliness if dest was always 32 bit word aligned... */
 #define EMIT_ELT(dest, offset, x) do {                          \
-        int off = offset + ( ( (GLuint)dest & 0x2 ) >> 1 );     \
-        GLushort *des = (GLushort *)( (GLuint)dest & ~0x2 );    \
+        int off = offset + ( ( (uintptr_t)dest & 0x2 ) >> 1 );     \
+        GLushort *des = (GLushort *)( (uintptr_t)dest & ~0x2 );    \
         (des)[ off + 1 - 2 * ( off & 1 ) ] = (GLushort)(x);	\
 	(void)rmesa; } while (0)
 #else

src/mesa/drivers/dri/radeon/radeon_tcl.c

@@ -207,8 +207,8 @@ static void radeonEmitPrim( struct gl_context *ctx,
 #ifdef MESA_BIG_ENDIAN
 /* We could do without (most of) this ugliness if dest was always 32 bit word aligned... */
 #define EMIT_ELT(dest, offset, x) do {				\
-	int off = offset + ( ( (GLuint)dest & 0x2 ) >> 1 );	\
-	GLushort *des = (GLushort *)( (GLuint)dest & ~0x2 );	\
+	int off = offset + ( ( (uintptr_t)dest & 0x2 ) >> 1 );	\
+	GLushort *des = (GLushort *)( (uintptr_t)dest & ~0x2 );	\
 	(des)[ off + 1 - 2 * ( off & 1 ) ] = (GLushort)(x); 	\
 	(void)rmesa; } while (0)
 #else