8a758af Issue 49158 - fix latest coverity issues

Authored and Committed by mreynolds 7 years ago
    Issue 49158 - fix latest coverity issues
    
    14094 - dereference after null check in cl_cache.c
    13685 - dereference before null check in cb_search.c
    13680 - Explicit null dereferenced in memberof.c
    13682 - Bad use of null-like value in ticket48005_test.py
    
    https://pagure.io/389-ds-base/issue/49158
    
    Reviewed by: nhosoi & firstyear (Thanks!!)
    
    (cherry picked from commit f77e77779aea54bc0fe068974e1dd130ea7e1891)
    (cherry picked from commit d8338ef8d18862295152b1c35bb7898146b169df)