Fix dns_fwdtable_addfwd() error path cleanup bug

Free 'sizeof(dns_forwarder_t)' bytes of memory instead of
'sizeof(dns_sockaddr_t)' bytes, because `fwd` is a pointer
to a 'dns_forwarder_t' type structure.

(cherry picked from commit 0cc1b06d98676ab66200d388c48c3cd615aa0109)

diff --git a/lib/dns/forward.c b/lib/dns/forward.c
index 53d0c5ee4e33a6ad52b0539f4962c4ac0159d8b0..c7c54cddcedc5dcf6f9f57ac944295976e53cd35 100644 (file)
--- a/lib/dns/forward.c
+++ b/lib/dns/forward.c
@@ -103,7 +103,7 @@ cleanup:
        while (!ISC_LIST_EMPTY(forwarders->fwdrs)) {
                fwd = ISC_LIST_HEAD(forwarders->fwdrs);
                ISC_LIST_UNLINK(forwarders->fwdrs, fwd, link);
-               isc_mem_put(fwdtable->mctx, fwd, sizeof(isc_sockaddr_t));
+               isc_mem_put(fwdtable->mctx, fwd, sizeof(dns_forwarder_t));
        }
        isc_mem_put(fwdtable->mctx, forwarders, sizeof(dns_forwarders_t));
        return (result);