Fix the CLOSED TREE caused by xpcshell test failures by touching the root xpcshell.ini manifest. See bug 994255

toolkit/mozapps/extensions/test/xpcshell/xpcshell.ini

@@ -25,4 +25,5 @@ run-if = appname == "firefox"
 [test_XPIcancel.js]
 [test_XPIStates.js]
 
+
 [include:xpcshell-shared.ini]