fix for a npe during search

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6528 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/search/ReferenceOrder.java

@@ -182,6 +182,6 @@ public class ReferenceOrder {
 
     private static final String patchUK(String l) {
         // this is to patch a bad language name setting that was used in 0.60 and before
-        if (l.equals("uk")) return "en"; else return l;
+        if (l == null || l.equals("uk")) return "en"; else return l;
     }
 }