bug 446198 - step timeout message doesn't end with a newline (followup to add em class=testfail). r=bhearsum

tools/buildbotcustom/unittest/steps.py

@@ -55,7 +55,7 @@ class ShellCommandReportTimeout(ShellCommand):
                                     'buildbot.slave.commands.TimeoutError: ' +
                                     line +
                                     "TinderboxPrint: " +
-                                    self.name + " timeout<br/>\n")
+                                    self.name + ' <em class="testfail">timeout</em><br/>\n')
                 return WARNINGS
         return superResult