adium 4928:1da981d1d4c6: Fix a leak when closing an AIChat.

[commits at adium.im]

details:	http://hg.adium.im/adium/rev/1da981d1d4c6
revision:	4928:1da981d1d4c6
branch:		adium-1.5.3
author:		Thijs Alkemade <thijsalkemade at gmail.com>
date:		Fri Jul 27 12:31:32 2012 +0200

Fix a leak when closing an AIChat.

diffs (11 lines):

diff -r dae37892125a -r 1da981d1d4c6 Frameworks/Adium Framework/Source/AIChat.m
--- a/Frameworks/Adium Framework/Source/AIChat.m	Wed Jul 25 22:51:06 2012 +0200
+++ b/Frameworks/Adium Framework/Source/AIChat.m	Fri Jul 27 12:31:32 2012 +0200
@@ -120,6 +120,7 @@
     [chatCreationInfo release]; chatCreationInfo = nil;
     [enteredTextTimer release]; enteredTextTimer = nil;
     [securityDetails release]; securityDetails = nil;
+	[lastMessageDate release]; lastMessageDate = nil;
 	
 	[super dealloc];
 }