chatzilla only. bug 79311, chatzilla doesn't always connect properly

r=samuel@sieb.net, rs=brendan@mozilla.org, a=asa@mozilla.org

- hook up onclose event.
- apply patch from 75226, fixes initial splitter position.

extensions/irc/xul/content/chatzilla.xul

@@ -35,6 +35,7 @@
         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
         align="vertical" onload="onLoad();" onunload="onUnload();"
+        onclose="return onClose();"
         persist="width height" windowtype="irc:chatzilla">
 
 <script src="chrome://chatzilla/content/lib/js/utils.js"/>
@@ -137,7 +138,7 @@
 <vbox id="outer-box" flex="1">
   <vbox id="upper-box" flex="1">
     <hbox id="tabpanels-contents-box" flex="1">
-      <vbox id="user-list-box" flex="1" width="20%" persist="collapsed width">
+      <vbox id="user-list-box" width="20%" persist="collapsed width">
   
         <tree id="user-list" container="true" datasources="rdf:null" flex="1"
          containment="http://home.netscape.com/NC-irc#chanuser"
@@ -201,7 +202,7 @@
         <grippy/>
       </splitter>
 
-      <vbox flex="1" persist="width">
+      <vbox flex="1">
         <iframe id="output-iframe" class="output-container" type="content"
           flex="1" src="chrome://chatzilla/content/outputwindow.html"/>
       </vbox>