Update: eqnull on destPath

Author: phated

lib/helpers.js

@@ -242,7 +242,7 @@ function includeContent(file, state, callback) {
 function contentIncluded(file, state, callback) {
 
   var comment;
-  if (state.destPath == undefined) {
+  if (state.destPath == null) {
     // encode source map into comment
     var base64Map = convert.fromObject(state.sourceMap).toBase64();
     // TODO: use convert-source-map .toComment() when we upgrade and have charset support