[geary: 3/3] Merge branch 'wip/555-sync-cancelled' into 'mainline'

[Michael Gratton <mjog src gnome org>]

commit a0105175e18031cc27a25e5c67ddf51403a555b1
Merge: c4fb5e99 97ff689b
Author: Michael Gratton <mike vee net>
Date:   Sat Sep 7 09:04:17 2019 +0000

    Merge branch 'wip/555-sync-cancelled' into 'mainline'
    
    Background sync folder closing is stopping the account processor
    
    Closes #557 and #555
    
    See merge request GNOME/geary!301

 .../imap-engine/imap-engine-account-processor.vala  | 21 +++++++++++++++------
 .../imap-engine-account-synchronizer.vala           |  4 ++++
 2 files changed, 19 insertions(+), 6 deletions(-)
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