Bug 194093 Fix tree list to use </UL> instead of <//UL>

r=dmose

webtools/tinderbox/showbuilds.cgi

@@ -134,7 +134,7 @@ sub show_tree_selector {
   foreach (@list) {
     print "<LI><a href=admintree.cgi?tree=$_>$_</a>\n";
   }
-  print "<//UL></TD></TR></TABLE></TD></TR></TABLE>";
+  print "</UL></TD></TR></TABLE></TD></TR></TABLE>";
 }
 
 sub do_static {