Bug 552593 - Closing the last tab via javascript should honor browser.tabs.closeWindowWithLastTab = false. r=gavin

browser/base/content/tabbrowser.xml

@@ -2299,9 +2299,6 @@
           if (!event.isTrusted)
             return;
 
-          if (this.mTabs.length == 1)
-            return;
-
           var tab = this._getTabForContentWindow(event.target);
           if (tab) {
             this.removeTab(tab);