Coverity Fixes (Part 3)
    
    11692 - Explicit null dereferenced (libavl/avl.c)
    11695 - Explicit null dereferenced (cb_conn_stateless.c)
    11696 - Explicit null dereferenced (memberof_config.c)
    11697 - Explicit null dereferenced (memberof.c)
    11698 - Explicit null dereferenced (memberof.c)
    11699 - Explicit null dereferenced (memberof.c)
    11700 - Explicit null dereferenced (memberof.c)
    11701 - Explicit null dereferenced (cl5_api.c)
    11702 - Explicit null dereferenced (cl5_api.c)
    11703 - Dereference after null check (cl5_clcache.c)
    11704 - Dereference after null check (repl5_replica_config.c)
    11705 - Explicit null dereferenced (syntaxes/string.c)
    11706 - Dereference after null check (plugin.c)
    11707 - Dereference after null check (plugin.c)
    11711 - Dereference after null check (ldif2ldbm.c)
    11726 - Dereference after null check (valueset.c)
    11729 - Explicit null dereferenced (libaccess/oneeval.cpp)
    11744 - Explicit null dereferenced (dbverify.c)
    11745 - Out-of-bounds read (linked_attrs.c)
    11745 - Out-of-bounds read (memberof.c)
    
    https://bugzilla.redhat.com/show_bug.cgi?id=970221
    
    Reviewed by: richm(Thanks!)
    (cherry picked from commit 36f25726b9723f743bc240cb44b88f74ad478ef2)