Bug 370021 - Element Properties window is broken on links without ping attribute when browser.send_pings.require_same_host is set to true

Fix by adding a null-check
p=Florian Queze <f.qu@queze.net>
r=mano


git-svn-id: svn://10.0.0.236/trunk@220598 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/browser/base/content/metaData.js

@@ -108,7 +108,10 @@ function getPings(elem)
   var docURI = ios.newURI(doc.documentURI, doc.characterSet, null);
 
   // The URL strings returned by elem.ping are absolute URLs.
-  var pings = elem.ping.split(" ");
+  var pings = elem.ping;
+  if (!pings)
+    return result;
+  pings = pings.split(" ");
   for (var i = 0; i < pings.length; ++i) {
     if (requireSameHost) {
       var uri = ios.newURI(pings[i], doc.characterSet, null);