cfaa16f KRB5: Fix condition for empty string

1 file Authored by lslebodn 10 years ago, Committed by jhrozek 10 years ago,
    KRB5: Fix condition for empty string
    
    Reported by: cppcheck
    
    Finding the same expression on both sides of an operator || is suspicious and
    might indicate a cut and paste or logic error.
    
    Resolves:
    https://fedorahosted.org/sssd/ticket/2258
    
    Reviewed-by: Michal Žídek <mzidek@redhat.com>