hack against 100% cpu during crawl delete

source/de/anomic/crawler/Balancer.java

@@ -473,15 +473,14 @@ public class Balancer {
             long w;
             Row.Entry rowEntry;
             try {
-                rowEntry=(n == null) ? null : this.urlFileIndex.get(n, false);
+                rowEntry = this.urlFileIndex.get(n, false);
                 if (rowEntry == null) {
-                    w = Latency.waitingRemainingGuessed(entry.getKey(), this.minimumLocalDelta, this.minimumGlobalDelta);
-                } else {
+                	continue;
+                }
                 Request crawlEntry = new Request(rowEntry);
                 w = Latency.waitingRemaining(crawlEntry.url(), robots, this.myAgentIDs, this.minimumLocalDelta, this.minimumGlobalDelta);
                 //System.out.println("*** waitingRemaining = " + w + ", guessed = " + Latency.waitingRemainingGuessed(entry.getKey(), this.minimumLocalDelta, this.minimumGlobalDelta));
                 //System.out.println("*** explained: " + Latency.waitingRemainingExplain(crawlEntry.url(), robots, this.myAgentIDs, this.minimumLocalDelta, this.minimumGlobalDelta));
-                }
             } catch (IOException e1) {
                 w = Latency.waitingRemainingGuessed(entry.getKey(), this.minimumLocalDelta, this.minimumGlobalDelta);
             }