fix for http://forum.yacy-websuche.de/viewtopic.php?f=5&t=4652

generate dht data even if dht receive and dht transmission is switched
off

source/net/yacy/kelondro/blob/HeapModifier.java

@@ -99,6 +99,7 @@ public class HeapModifier extends HeapReader implements BLOB {
      */
     @Override
     public void delete(byte[] key) throws IOException {
+        if (this.index == null) return;
         key = normalizeKey(key);
 
         // pre-check before synchronization

source/net/yacy/search/Switchboard.java

@@ -2701,7 +2701,7 @@ public final class Switchboard extends serverSwitch {
                 condenser,
                 searchEvent,
                 sourceName,
-                getConfigBool(SwitchboardConstants.DHT_ENABLED, false) && !isRobinsonMode());
+                getConfigBool(SwitchboardConstants.DHT_ENABLED, false));
         final RSSFeed feed =
             EventChannel.channels(queueEntry.initiator() == null
                 ? EventChannel.PROXY