Pass the key for the command 'cancel' (default Esc) through if the preedit is empty
Pass the key for the command 'cancel' (default Esc) through if the preedit is empty

Resolves: https://github.com/kaio/ibus-table/issues/64

kaio/ibus-table,mike-fabian/ibus-table,kaio/ibus-table,mike-fabian/ibus-table