Fix 172735 - fix JS error

browser/components/downloads/content/downloadPanel.js

@@ -75,8 +75,10 @@ var downloadDNDObserver =
   {
     var split = aXferData.data.split("\n");
     var url = split[0];
-    var name = split[1];
-    saveURL(url, name, null, true, true);
+    if (url != split) {  //do nothing, not a valid URL
+      var name = split[1];
+      saveURL(url, name, null, true, true);
+      }
   },
   _flavourSet: null,  
   getSupportedFlavours: function ()