fix for NPE

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5789 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/yacy/dht/Dispatcher.java

@@ -291,6 +291,7 @@ public class Dispatcher {
             final int maxContainerCount,
             final int maxReferenceCount,
             final int maxtime) throws IOException {
+        if (this.transmissionCloud == null) return false;
 
     	ArrayList<ReferenceContainer> selectedContainerCache = selectContainers(hash, limitHash, maxContainerCount, maxReferenceCount, maxtime);
         this.log.logInfo("selectContainersToCache: selectedContainerCache was filled with " + selectedContainerCache.size() + " entries");