EAGLESIX-2697 Style edit to ObjectExpression

lib/pipeline/expressions/ObjectExpression.js

@@ -83,7 +83,7 @@ proto.isSimple = function isSimple(){
 };
 
 proto.addDependencies = function addDependencies(depsTracker, path){
-	if (typeof depsTracker.fields == 'undefined'){
+	if (!depsTracker.fields){
 		depsTracker.fields = {};
 	}
 	var pathStr = "";