fix stats in unusual case of "failed" fetch with response > 0 (only case where this can happen currently is if basic auth is configured for a url, but fails and url returns "401 Unauthorized")

modules/src/main/java/org/archive/modules/fetcher/FetchStats.java

@@ -74,7 +74,6 @@ public class FetchStats extends CrawledBytesHistotable implements Serializable,
                 }
                 break;
             case SUCCEEDED:
-                this.accumulate(curi);
                 tally(FETCH_SUCCESSES, 1);
                 tally(FETCH_RESPONSES, 1);
                 tally(TOTAL_BYTES, curi.getContentSize());
@@ -100,6 +99,10 @@ public class FetchStats extends CrawledBytesHistotable implements Serializable,
             default:
                 break;
         }
+
+        if (curi.getFetchStatus() > 0) {
+            this.accumulate(curi);
+        }
     }
 
     public long getFetchSuccesses() {