(ITS#5684) slapd crashes when adding entries do cn=config with a too large index

[rhafer@suse.de]

Full_Name: Ralf Haferkamp
Version: HEAD, RE24
OS: 
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (89.166.240.108)


slapd crashes when trying to add an indexed entry to cn=config with an index
larger than the number of sibling entries.
E.g. when you have to entries below cn=schema,cn=config (with index {0} an {1})
and try to add cn={3}myschema,cn=schema,... slapd dumps core.

I am currently testing a fix that just adjusts the index of the new entry to
match the number of sibilings. (Another option would be to error out).