Fix list behaviour in chat page

package.json

@@ -49,7 +49,7 @@
     "nodebb-plugin-spam-be-gone": "^0.4.0",
     "nodebb-rewards-essentials": "^0.0.1",
     "nodebb-theme-lavender": "^1.0.48",
-    "nodebb-theme-persona": "^1.0.23",
+    "nodebb-theme-persona": "^1.0.24",
     "nodebb-theme-vanilla": "^2.0.19",
     "nodebb-widget-essentials": "^1.0.2",
     "npm": "^2.1.4",

public/src/client/chats.js

@@ -164,7 +164,7 @@ define('forum/chats', ['components', 'string', 'sounds', 'forum/infinitescroll',
 	};
 
 	Chats.resizeMainWindow = function() {
-		var	messagesList = $('.expanded-chat ul');
+		var	messagesList = $('.expanded-chat .chat-content');
 
 		if (messagesList.length) {
 			var	margin = $('.expanded-chat ul').outerHeight(true) - $('.expanded-chat ul').height(),