Ticket 408 - create a normalized dn cache
covscan Defect type: FORWARD_NULL
15. 389-ds-base-1.3.1.6/ldap/servers/slapd/dn.c:3036:var_deref_op -
Dereferencing null pointer "node".
Introduced by commit 1d6dd39fb8b0ef8eb42ec9ef8c3d325e27a3d3c1
Fix: Check if "node" is null or not before referencing.
Note: Found second FORWARD_NULL in addition to
commit 5ac08038a05877b4240755801debd5e5a3a94c6f,
(cherry picked from commit ea13cda8f49646be8a9a5e468b2819bd2d91ca87)
(cherry picked from commit dfa36fd4a7ab243a5692e7792d19e67e63b1e397)
(cherry picked from commit 347ffb722f7d376e0ad2c565ada533f0dad3cfb8)