From 54828d589d1d25f84023edb23c9ed82aa51ef0ad Mon Sep 17 00:00:00 2001
From: Jilles Tjoelker <jilles@stack.nl>
Date: Sun, 22 Feb 2009 00:05:48 +0100
Subject: [PATCH] Avoid unnecessary const violation.

---
 src/supported.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/supported.c b/src/supported.c
index b8cb37a52..f34562e3f 100644
--- a/src/supported.c
+++ b/src/supported.c
@@ -116,7 +116,7 @@ change_isupport(const char *name, const char *(*func)(const void *), const void
 {
 	rb_dlink_node *ptr;
 	struct isupportitem *item;
-	void *oldvalue;
+	const void *oldvalue;
 
 	RB_DLINK_FOREACH(ptr, isupportlist.head)
 	{