Handle package.json without dependencies section

packages/node_modules/@node-red/registry/lib/localfilesystem.js

@@ -472,7 +472,7 @@ function getPackageList() {
         try {
             var userPackage = path.join(settings.userDir,"package.json");
             var pkg = JSON.parse(fs.readFileSync(userPackage,"utf-8"));
-            return pkg.dependencies;
+            return pkg.dependencies || {};
         } catch(err) {
             log.error(err);
         }