bugfix for

http://www.yacy-forum.de/viewtopic.php?p=24127#24127

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2333 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/kelondro/kelondroMergeIterator.java

@@ -74,14 +74,14 @@ public class kelondroMergeIterator implements Iterator {
     
     private void nexta() {
         try {
-            if (a.hasNext()) na = (String) a.next(); else na = null;
+            if (a.hasNext()) na = a.next(); else na = null;
         } catch (ConcurrentModificationException e) {
             na = null;
         }
     }
     private void nextb() {
         try {
-            if (b.hasNext()) nb = (String) b.next(); else nb = null;
+            if (b.hasNext()) nb = b.next(); else nb = null;
         } catch (ConcurrentModificationException e) {
             nb = null;
         }