Coverity fixes - 12023, 12024, and 12025
    
    . 12023 - Ignoring number of bytes read
      basicInit (ldclt.c):
      The return value from fread was ignored and not used for copying
      the read content from buffer to mctx.attrplFileContent.
    . 12024 - Resource leak
      roles_cache_create_object_from_entry (roles_cache.c):
      When an error occurred, filter_attr_value was not freed.
    
    Reviewed by rmeggins (Thank you, Rich!!)
    (cherry picked from commit f702868012ac1f9deb1cb92d51cdfd793353e836)
    (cherry picked from commit 99f7b65e4bd35ce5d2c24a05178cfca4a44645db)
    (cherry picked from commit aa19f9ad2d2d1ee58fa2a0da3b6119a95ea47733)