gnucash stable: Fix Asan UB complaint about int64_t alignment.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/3a066029 (commit)
	from  https://github.com/Gnucash/gnucash/commit/603e6ced (commit)



commit 3a06602910289aefc9d0c43abfb031e0f0870326
Author: John Ralls <jralls at ceridwen.us>
Date:   Sat Dec 20 17:46:44 2025 -0800

    Fix Asan UB complaint about int64_t alignment.
    
    by doing endian_swap on the aligned local instead of the unaligned bytes of the memory mapped file.



Summary of changes:
 libgnucash/engine/gnc-timezone.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)