Contributor email is optional.

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@370211 13f79535-47bb-0310-9956-ffa450edef68

xdoc/src/plugin-resources/templates/team-list.xml

@@ -194,9 +194,11 @@
                         <tr>
                             <td>$!contributor.name</td>
                             <td>
+                                #if ($contributor.email.length() != 0)
                                 <a href="mailto:$!contributor.email">
                                     $!contributor.email
                                 </a>
+                                #end
                             </td>
                             <td>$!contributor.organization</td>
                             <td>