removed check on undefined configState.filename - should not happen, and is covered by the statSync anyway

lib/log4js.js

@@ -224,10 +224,6 @@ function configureOnceOff(config, options) {
 function reloadConfiguration() {
   var filename = configState.filename,
   mtime;
-  if (!filename) {
-    // can't find anything to reload
-    return;
-  }
   try {
     mtime = fs.statSync(filename).mtime;
   } catch (e) {