Avoid putting an empty String at the end of the array in parseURLs().

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4966 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/util/StringUtil.as

@@ -313,8 +313,9 @@ public class StringUtil
             s = s.substring(index + url.length);
         }
 
-        // just the string is left
-        array.push(s);
+        if (s != "" || array.length == 0) { // avoid putting an empty string on the end
+            array.push(s);
+        }
         return array;
     }