glsl: Include missing header in slang_utility.h.

Include glheader.h for GL symbols.

diff --git a/src/mesa/slang/slang_utility.h b/src/mesa/slang/slang_utility.h
index 2c0d0bcbb2a90814e31fed6bbf073147193ec937..cb9b6d2aaaad2bfd2dee71e4b9469743f09c847a 100644 (file)
--- a/src/mesa/slang/slang_utility.h
+++ b/src/mesa/slang/slang_utility.h
@@ -26,6 +26,8 @@
 #define SLANG_UTILITY_H
 
 
+#include "main/glheader.h"
+
 /* Compile-time assertions.  If the expression is zero, try to declare an
  * array of size [-1] to cause compilation error.
  */