(ITS#6792) rwm with broken config suppresses LDAP response

[h.b.furuseth@usit.uio.no]

Full_Name: Hallvard B Furuseth
Version: RE24, HEAD
OS: Linux x86_64
URL: http://folk.uio.no/hbf/OpenLDAP/rwmhang-draft.txt
Submission from: (NULL) (193.157.201.147)
Submitted by: hallvard


rwm suppresses the LDAP response message if rwm_response() fails.
This hangs waiting for the response:

include  servers/slapd/schema/core.schema
database monitor
overlay  rwm
rwm-rewriteEngine  on
rwm-rewriteContext matchedDN
# Rewrite to nonexistent $1 or broken DN
rwm-rewriteRule    ".*time.*" "cn=test,$1" :
rwm-rewriteRule    ".*"       "urgle"      :

ldapcompare -x cn=hello,cn=time,cn=monitor l:x
ldapsearch  -xLLL -b   cn=hello,cn=monitor

The enclosed patch seems to fix it, but I've only looked briefly at
what's going on.