*) avoid performance loss if log level is greater than 'fine'

See: http://www.yacy-forum.de/viewtopic.php?p=25180

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2467 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/plasma/plasmaDHTChunk.java

@@ -290,6 +290,7 @@ public class plasmaDHTChunk {
             }
             String wordHash = indexContainers[i].getWordHash();
             count += wordIndex.removeEntries(this.indexContainers[i].getWordHash(), urlHashes, true);
+            if (log.isFine()) 
                 log.logFine("Deleted partial index (" + c + " URLs) for word " + wordHash + "; " + this.wordIndex.indexSize(wordHash) + " entries left");
             this.indexContainers[i] = null;
         }