minor change to pbxFile

Author: Anis Kadri

lib/pbxFile.js

@@ -164,9 +164,8 @@ function defaultGroup(fileRef) {
 }
 
 function pbxFile(filepath, opt) {
-    var opt = opt || {};
-
-    self = this;
+    var opt = opt || {},
+        self = this;
 
     this.basename = path.basename(filepath);
     this.lastKnownFileType = opt.lastKnownFileType || detectType(filepath);