gnucash master: Fix build with cmake > 3.5

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/a7f1f9cd (commit)
	from  https://github.com/Gnucash/gnucash/commit/a6678e6a (commit)



commit a7f1f9cdd74881285ca25acf96f0650ee2aecce4
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Sun Jul 9 12:45:01 2017 +0200

    Fix build with cmake > 3.5



Summary of changes:
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)