Bug 344871: Recently closed tabs Menu not present in Trunk builds if places disabled, patch by Bill Gianopoulos <wgianopoulos@yahoo.com>, r=me, r=dietrich

browser/base/content/browser-menubar.inc

@@ -405,6 +405,10 @@
                           key="goHome"/>
                 <menuseparator id="startHistorySeparator"/>
                 <menuseparator hidden="true" id="endHistorySeparator"/>
+                <menu id="historyUndoMenu" label="&historyUndoMenu.label;" disabled="true">
+                  <menupopup id="historyUndoPopup"/>
+                </menu>
+                <menuseparator id="endUndoSeparator"/>
                 <menuitem observes="viewHistorySidebar" label="&historyShowSidebarCmd.label;"
                           key="key_gotoHistory"/>
               </menupopup>