$OpenBSD: patch-objects_tag_c,v 1.1 2021/02/02 15:37:25 bket Exp $

Fix -fno-common build failure. Taken from
https://github.com/awesomeWM/awesome/commit/d256d9055095f27a33696e0aeda4ee20ed4fb1a0

Index: objects/tag.c
--- objects/tag.c.orig
+++ objects/tag.c
@@ -190,6 +190,8 @@
 #include "ewmh.h"
 #include "luaa.h"
 
+lua_class_t tag_class;
+
 /**
  * @signal request::select
  */
