avoid division by zero when index transfer is extremely fast

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1269 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/plasma/plasmaWordIndexDistribution.java

@@ -735,7 +735,9 @@ public final class plasmaWordIndexDistribution {
         }
         
         public int getTransferedEntitySpeed() {
-            return (int) ((1000 * transferedEntryCount) / (System.currentTimeMillis()-startingTime));
+            long transferTime = System.currentTimeMillis() - startingTime;
+            if (transferTime <= 0) transferTime = 1;
+            return (int) ((1000 * transferedEntryCount) / transferTime);
         }
         
         public yacySeed getSeed() {
@@ -929,4 +931,4 @@ public final class plasmaWordIndexDistribution {
         */
     }
 
-}
+}