gnucash stable: [transaction.cpp] use std::swap instead of SWAP macro

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/5f173343 (commit)
	from  https://github.com/Gnucash/gnucash/commit/2250e691 (commit)



commit 5f1733439599c800d94c54c23f4c7433f4a0f679
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Tue Jul 9 20:09:06 2024 +0800

    [transaction.cpp] use std::swap instead of SWAP macro



Summary of changes:
 libgnucash/engine/Transaction.cpp | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)