Addressed CR feedback.

DanielRosenwasser · DanielRosenwasser · commit 83c35ad059a4 · 2014-09-09T12:50:14.000-07:00
diff --git a/src/compiler/parser.ts b/src/compiler/parser.ts
@@ -411,7 +411,7 @@ module ts {
         while (true) {
             node = node.parent;
             if (!node) {
-                return node;
+                return undefined;
             }
             switch (node.kind) {
                 case SyntaxKind.ArrowFunction:
@@ -438,7 +438,7 @@ module ts {
         while (true) {
             node = node.parent;
             if (!node) {
-                return node;
+                return undefined;
             }
             switch (node.kind) {
                 case SyntaxKind.Property:
