gnucash master: Fix crash in gnc_owner_get_owner

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/fc41a51f (commit)
	from  https://github.com/Gnucash/gnucash/commit/03bca602 (commit)



commit fc41a51f57d6f6eaca4deca2b371e83b3caed211
Author: John Ralls <jralls at ceridwen.us>
Date:   Fri Mar 24 12:38:23 2023 -0700

    Fix crash in gnc_owner_get_owner
    
    If there are no owners gnc_general_search_get_selected
    returns nullptr without showing the dialog.



Summary of changes:
 gnucash/gnome/business-gnome-utils.c | 3 +++
 1 file changed, 3 insertions(+)