c26bc96 Fix for rhbz #1412260

Authored and Committed by sergiomb 4 years ago
    Fix for rhbz #1412260
    
    Return None in _open_cert when ~/.fedora.upn exist is not correct,
    i.e. we can read cert if we delete ~/.fedora.upn ?
    With latest commits we already have enough warnings that fedora does
    not use client certificate anymore, but if other external repos try to use this
    code, the code works instead have an traceback error.
    
    Signed-off-by: Sérgio M. Basto <sergio@serjux.com>
    
        
file modified
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