addon to latest fix

11 years ago · 4ae7aead28
parent 500e0b9927
commit 4ae7aead28
1 changed files with 1 additions and 0 deletions
--- a/source/net/yacy/crawler/HostBalancer.java
+++ b/source/net/yacy/crawler/HostBalancer.java
@ -473,6 +473,7 @@ public class HostBalancer implements Balancer {
     */
    @Override
    public List<Request> getDomainStackReferences(String host, int maxcount, long maxtime) {
+        if (host == null) return new ArrayList<Request>(0);
        try {
            HostQueue hq = this.queues.get(DigestURL.hosthash(host, host.startsWith("ftp.") ? 21 : 80));
            if (hq == null) hq = this.queues.get(DigestURL.hosthash(host, 443));