Fixed XHTML close taqg bug when printing multiline assert messages on the last step in a case

Change-Id: I79a1dee0ba8b687893be0d502b8b149cd500f2a4
diff --git a/TestON/core/teston.py b/TestON/core/teston.py
index 6eb70e8..e15b9e1 100644
--- a/TestON/core/teston.py
+++ b/TestON/core/teston.py
@@ -310,6 +310,8 @@
                         subcaseMessage = True
                     else:  # Add to Failure Message Printout
                         self.log.wiki( "<li>" + line + "</li>\n" )
+            if subcaseMessage:  # End of Failure Message Printout for last item
+                self.log.wiki( "</ul>\n" )
             self.log.wiki( "</ul>" )
             self.log.summary( self.stepCache )
             self.stepCache = ""