(ITS#4958) slapd segfaults when overlay rwm, suffixmassage is used in conjunction with empty suffix

Full_Name: Nikos Voutsinas
Version: 2.3.35
OS: Solaris
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (195.134.100.39)


As ando already said:
.....it tries to lookup a database to relay for when
unbinding,
but unbind has no DN, so a strcmp on NULL is performed. 
This does not
happen when using the "relay" directive because
relay database selection
does not occur for each operation....


configuration example:
database        bdb
suffix          "dc=real,dc=naming,dc=context"
....
....
....
database        relay
suffix          ""
overlay         rwm
suffixmassage  "dc=real,dc=naming,dc=context"