Bug 750625 - Fix Coverity (11116) Uninitialized pointer read
https://bugzilla.redhat.com/show_bug.cgi?id=750625
slapd/back-ldbm/ldbm_entryrdn.c (entryrdn_lookup_dn)
Bug Description: Using uninitialized "data.data" when calling
"slapi_ch_free". If invalid NULL arguments or invalid DN is
passed or opening cursor failed, uninitialized data.data is freed.
Fix Description: initialize data if there is a chance to call
slapi_ch_free.