Bug 368456 - 'Close Tab' in the context menu for tabs should not be disabled when only one tab is open. r=gavin.

browser/base/content/tabbrowser.xml

@@ -92,7 +92,6 @@
                                      tabbrowser.removeAllTabsBut(tabbrowser.mContextTab);"/>
             <xul:menuseparator/>
             <xul:menuitem label="&closeTab.label;" accesskey="&closeTab.accesskey;"
-                          tbattr="tabbrowser-multiple"
                           oncommand="var tabbrowser = this.parentNode.parentNode.parentNode.parentNode;
                                      tabbrowser.removeTab(tabbrowser.mContextTab);"/>
           </xul:menupopup>