From 6c6c89e835a55f05129256991db7bd847cd67769 Mon Sep 17 00:00:00 2001
From: Gerald Combs <gerald@wireshark.org>
Date: Sat, 28 Mar 2009 05:14:16 +0000
Subject: [PATCH] Add a missing check.

svn path=/trunk/; revision=27875
---
 epan/emem.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/epan/emem.c b/epan/emem.c
index 1a0f9ef254..722777664f 100644
--- a/epan/emem.c
+++ b/epan/emem.c
@@ -1760,7 +1760,11 @@ ep_strbuf_append(emem_strbuf_t *strbuf, const gchar *str) {
 		ep_strbuf_grow(strbuf, strbuf->len + add_len);
 	}
 	
-	g_strlcpy(&strbuf->str[strbuf->len], str, strbuf->alloc_len - add_len);
+	if (strbuf->len + add_len > strbuf->alloc_len) {
+		add_len = strbuf->alloc_len - strbuf->len;
+	}
+
+	g_strlcpy(&strbuf->str[strbuf->len], str, add_len);
 	strbuf->len += add_len;
 }