43fae34 Fix cancelling a rebase

Authored and Committed by pingou 5 years ago
    Fix cancelling a rebase
    
    When clicking on the rebase button you are prompted with a dialog to
    confirm if you want the rebase or not.
    Turns out we were not respecting the user's choice if they cancelled
    there.
    With this commit, we do.
    
    Fixes https://pagure.io/pagure/issue/4267
    
    Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>