fixes webpack#266

sokra · sokra · commit 7e08847df59f · 2014-05-14T08:20:57.000+02:00
diff --git a/lib/RequestShortener.js b/lib/RequestShortener.js
@@ -24,7 +24,7 @@ function RequestShortener(directory) {
 
 	if(__dirname.length >= 2) {
 		var buildins = path.join(__dirname, "..");
-		var buildinsAsModule = currentDirectoryRegExp.test(buildins);
+		var buildinsAsModule = currentDirectoryRegExp && currentDirectoryRegExp.test(buildins);
 		var buildinsRegExp = buildins.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
 		buildinsRegExp = new RegExp("^" + buildinsRegExp + "|(!)" + buildinsRegExp, "g");
 
