sasl-regexp's that return multiple entries cause segfault in debug mode (ITS#3033)

[quanah@stanford.edu]

Full_Name: Quanah Gibson-Mount
Version: 2.2.6+patches
OS: Solaris 8
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (171.64.19.82)


In trying to debug a problem we were having with an application, I found that
slapd segfaults when in debug mode (slapd started with -d -1) if multiple
entries are returned when performing a sasl-regexp.

We had two different DN's that had the same krb5PrincipalName value.  The
sasl-regexp would find the DN by krb5PrincipalName.

--Quanah