From e21e5c18ff5ce0f2e1d0b0db54775e1dbbfe25fb Mon Sep 17 00:00:00 2001
From: irungentoo <irungentoo@gmail.com>
Date: Thu, 28 Nov 2013 19:52:30 -0500
Subject: [PATCH] Fix possible crash.

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

diff --git a/src/chat.c b/src/chat.c
index ddc475d..9d94763 100644
--- a/src/chat.c
+++ b/src/chat.c
@@ -110,7 +110,7 @@ static void chat_onFileSendRequest(ToxWindow *self, Tox *m, int num, uint8_t fil
     ChatContext *ctx = (ChatContext *) self->chatwin;
 
     int idx = strlen(pathname) - 1;
-    while (pathname[idx] == '/') {
+    while (pathname[idx] == '/' && idx >= 0) {
       pathname[idx--] = 0;
     }