gnucash maint: One more minor cmake cleanup

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/be148484 (commit)
	from  https://github.com/Gnucash/gnucash/commit/b7479e8f (commit)



commit be1484841c16c064387f9eff7aed4a5ba56a301f
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Sat May 25 12:11:53 2019 +0200

    One more minor cmake cleanup



Summary of changes:
 common/cmake_modules/GncAddTest.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)