mesa: Prevent CONST macro re-definition.

Should fix MSVC build, as windows.h also defines CONST.

CONST usage in get.c is not new, so probably this just appeared now due
to changes in the includes.

diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index b943d69b71bb8a625cc5b0a3b9daa1a96e6ce9e0..7570fab962c54ecb49c5b5a51f4879fc6f04a7ae 100644 (file)
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -172,6 +172,7 @@ union value {
    LOC_CONTEXT, type, offsetof(struct gl_context, field)
 #define ARRAY_FIELD(field, type) \
    LOC_ARRAY, type, offsetof(struct gl_array_object, field)
+#undef CONST /* already defined through windows.h */
 #define CONST(value) \
    LOC_CONTEXT, TYPE_CONST, value