$OpenBSD: patch-src_colorfilter_parser_h,v 1.1 2021/02/13 22:16:12 bket Exp $

Fix -fno-common build error. Taken from
https://github.com/compiz-reloaded/compiz-plugins-main/commit/1f39291442513c08930bef308d0ce9dccea74589

Index: src/colorfilter/parser.h
--- src/colorfilter/parser.h.orig
+++ src/colorfilter/parser.h
@@ -21,7 +21,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
-enum
+extern enum
 {
     NoOp,
     DataOp,
