gnucash future: Fix null-deref crash.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/105a6142 (commit)
	from  https://github.com/Gnucash/gnucash/commit/e25a73a6 (commit)



commit 105a61424b1bf1c5704d63277103fc5fcaf1ac8a
Author: John Ralls <jralls at ceridwen.us>
Date:   Tue Jul 21 12:28:05 2026 -0700

    Fix null-deref crash.
    
    MSYS2 strtok has acquired the habit of crashing in the first call if the string is NULL.



Summary of changes:
 gnucash/gnucash-locale-windows.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)