gnucash master: [aqb] Restore compilation checks for AQBanking 6.4

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/68dabea1 (commit)
	from  https://github.com/Gnucash/gnucash/commit/06612b84 (commit)



commit 68dabea1996024bd4bce5ddcecfe3783d027ca73
Author: John Ralls <jralls at ceridwen.us>
Date:   Sun Dec 11 13:42:07 2022 -0800

    [aqb] Restore compilation checks for AQBanking 6.4
    
    We require only 6.1.



Summary of changes:
 gnucash/import-export/aqb/dialog-ab-trans.c | 23 +++++++++++++++++++----
 gnucash/import-export/aqb/gnc-ab-transfer.c |  6 ++++++
 gnucash/import-export/aqb/gnc-ab-utils.c    |  4 ++++
 gnucash/import-export/aqb/gnc-ab-utils.h    |  4 ++--
 4 files changed, 31 insertions(+), 6 deletions(-)