Don't crash with an NPE when the cache contains removed repositoried

Robin Rosenberg

2013-09-01 86dca9da11d66aba2104ab64fbe3affb5ebf0ff4

 src/main/java/com/gitblit/GitBlit.java

@@ -3603,7 +3603,7 @@
         Date cutoff = CommitCache.instance().getCutoffDate();
         for (String repositoryName : getRepositoryList()) {
            RepositoryModel model = getRepositoryModel(repositoryName);
            if (model.hasCommits && model.lastChange.after(cutoff)) {
            if (model != null && model.hasCommits && model.lastChange.after(cutoff)) {
               repoCount++;
               Repository repository = getRepository(repositoryName);
               for (RefModel ref : JGitUtils.getLocalBranches(repository, true, -1)) {