Bug #292009 --> [Mac} Can't dismiss View Password dialog

mail/components/preferences/privacy.js

@@ -86,7 +86,7 @@ var gPrivacyPane = {
 
   viewPasswords: function()
   {
-    document.documentElement.openSubDialog("chrome://messenger/content/preferences/viewpasswords.xul",
+    document.documentElement.openWindow("Toolkit:PasswordManager", "chrome://messenger/content/preferences/viewpasswords.xul",
                                         "", null);
   },
 

mail/components/preferences/viewpasswords.xul

@@ -43,6 +43,7 @@
 <!DOCTYPE dialog SYSTEM "chrome://messenger/locale/preferences/viewpasswords.dtd" >
 
 <prefwindow id="SignonViewerDialog" 
+            windowtype="Toolkit:PasswordManager"
             xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
             dlgbuttons="accept"
             onload="Startup();" onunload="Shutdown();"