fix lint.

git-svn-id: file:///svn/unbound/trunk@4621 be551aaa-1e26-0410-a405-d3ace91eadb9

diff --git a/services/authzone.c b/services/authzone.c
index 16e6439f425488951aea9cb64df09a819eee9abc..1697a3e488643047ca13edb508265cc392ff7cff 100644 (file)
--- a/services/authzone.c
+++ b/services/authzone.c
@@ -3210,7 +3210,7 @@ auth_zone_parse_notify_serial(sldns_buffer* pkt, uint32_t *serial)
        rdlen = sldns_buffer_read_u16(pkt); /* rdatalen */
        if(sldns_buffer_remaining(pkt) < rdlen) return 0;
        if(rdlen < 22) return 0; /* bad soa length */
-       sldns_buffer_skip(pkt, rdlen-20);
+       sldns_buffer_skip(pkt, (ssize_t)(rdlen-20));
        *serial = sldns_buffer_read_u32(pkt);
        /* return true when has serial in answer section */
        return 1;