add more checking of corrupt indexdata file, a=chris

diff --git a/bin/queue_server.php b/bin/queue_server.php
index c6d82a1eb..27a198507 100755
--- a/bin/queue_server.php
+++ b/bin/queue_server.php
@@ -1104,7 +1104,7 @@ class QueueServer implements CrawlConstants
             $this->deleteRobotData();
         } else {
             crawlLog("... less than max age\n");
-            crawlLog("Number of Crawl-Delayed Hosts".count(
+            crawlLog("Number of Crawl-Delayed Hosts: ".count(
                 $this->waiting_hosts));
         }