Fix for #1034 Ticket Page Error

Paul Martin

2016-03-31 10f798a1fab5f7b23f498e2746b1b6a50010a288

 src/main/java/com/gitblit/manager/RepositoryManager.java

@@ -1113,9 +1113,16 @@
         // find the root, cached
         String key = getRepositoryKey(repository);
         RepositoryModel model = repositoryListCache.get(key);
         if (model == null) {
            return null;
         }

         while (model.originRepository != null) {
            String originKey = getRepositoryKey(model.originRepository);
            model = repositoryListCache.get(originKey);
            if (model == null) {
               return null;
            }
         }
         ForkModel root = getForkModelFromCache(model.name);
         return root;