Ticket 48276 - initialize free_flags in reslimit_update_from_entry()
    
    Description:  In reslimit_update_from_entry() the free_flags was not initialized,
                  which could lead to it being seen as set, and cause an entry's
                  vattrs to be incorrectly/unexpectedly freed.
    
    https://fedorahosted.org/389/ticket/48276
    
    Reviewed by: nhosoi(Thanks!)
    
    (cherry picked from commit 2311c71cec33c29863bdb1dabe1ed363679316d3)
    (cherry picked from commit 5f32582d043a5498791dda5af7091bf1a4a320f0)