sanity check args in BaseServer add/remove

Author: jasonsanjose

src/LiveDevelopment/Servers/BaseServer.js

@@ -169,6 +169,10 @@ define(function (require, exports, module) {
      * @param {Object} liveDocument
      */
     BaseServer.prototype.add = function (liveDocument) {
+        if (!liveDocument) {
+            return;
+        }
+        
         // use the project relative path as a key to lookup requests
         var key = this._documentKey(liveDocument.doc.file.fullPath);
 
@@ -181,6 +185,10 @@ define(function (require, exports, module) {
      * @param {Object} liveDocument
      */
     BaseServer.prototype.remove = function (liveDocument) {
+        if (!liveDocument) {
+            return;
+        }
+        
         var key = this._liveDocuments[this._documentKey(liveDocument.doc.file.fullPath)];
 
         if (key) {

src/extensions/psd-lens

@@ -0,0 +1 @@
+Subproject commit d71e1a783761a18d229e5531e3ef9d23b6114604