Minor tweak

Author: chasefleming

src/ngSanitize/filter/linky.js

@@ -118,8 +118,8 @@ angular.module('ngSanitize').filter('linky', ['$sanitize', function($sanitize) {
       // We can not end in these as they are sometimes found at the end of the sentence
       url = match[0];
       // if we did not match ftp/http/www/mailto then assume mailto
-      if (match[2] == match[4]) {
-        url = (url.substring(0, 4) === 'www.') ? ('http://' + url) : (url = 'mailto:' + url);
+      if (!match[2] && !match[4]) {
+        url = (match[3] ? 'http://' : 'mailto:') + url;
       }
       i = match.index;
       addText(raw.substr(0, i));