only loop over project OPTIONS response if the response is valid

see: #5194

awx/ui/client/src/controllers/Projects.js

@@ -51,6 +51,7 @@ export function ProjectsList($scope, $rootScope, $location, $log, $stateParams,
     // iterate over the list and add fields like type label, after the
     // OPTIONS request returns, or the list is sorted/paginated/searched
     function optionsRequestDataProcessing(){
+        if ($scope[list.name] !== undefined) {
             $scope[list.name].forEach(function(item, item_idx) {
                 var itm = $scope[list.name][item_idx];
 
@@ -70,6 +71,7 @@ export function ProjectsList($scope, $rootScope, $location, $log, $stateParams,
 
             });
         }
+    }
 
     function buildTooltips(project) {
         project.statusIcon = GetProjectIcon(project.status);