Fix 2 possible NullPointer occurences

marco

2015-10-17 1aec17636d8c548257cb307f8cc1e41354e00421

 src/main/java/com/gitblit/utils/MetricUtils.java

@@ -136,7 +136,7 @@


            Iterable<RevCommit> revlog = revWalk;

            for (RevCommit rev : revlog) {

               Date d = JGitUtils.getCommitDate(rev);

               Date d = JGitUtils.getAuthorDate(rev);

               String p = df.format(d);

               if (!metricMap.containsKey(p)) {

                  metricMap.put(p, new Metric(p));