From 02dca1dd8911e3a58d58f608b1639cf07dd53699 Mon Sep 17 00:00:00 2001
From: Edmund Huber <edmund.pgh@gmail.com>
Date: Sat, 6 Jun 2015 18:26:28 -0700
Subject: [PATCH] fix array overrun panic bug, #13

---
 irc/commands.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/irc/commands.go b/irc/commands.go
index f38ff59d..fe253716 100644
--- a/irc/commands.go
+++ b/irc/commands.go
@@ -327,6 +327,9 @@ func ParseJoinCommand(args []string) (Command, error) {
 	keys := make([]string, len(channels))
 	if len(args) > 1 {
 		for i, key := range strings.Split(args[1], ",") {
+			if i >= len(channels) {
+				break
+			}
 			keys[i] = key
 		}
 	}