avoid NPE

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@178142 13f79535-47bb-0310-9956-ffa450edef68

changelog/src/main/org/apache/maven/changelog/ChangeLog.java

@@ -421,6 +421,11 @@ public class ChangeLog
                     parser.cleanup();
                 }
 
+                if ( entries == null )
+                {
+                    entries = Collections.EMPTY_LIST;
+                }
+
                     sets.add(new ChangeLogSet(entries, logStart, logEnd));
                 if (LOG.isInfoEnabled()) {
                     LOG.info("ChangeSet between " + logStart + " and " + logEnd + ": "