gnucash maint: Minor build error message improvement

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/dc713592 (commit)
	from  https://github.com/Gnucash/gnucash/commit/cdcb230a (commit)



commit dc7135920b0c0e2e20f98ab12e9d78b2961afceb
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Fri Jun 8 14:27:58 2018 +0200

    Minor build error message improvement



Summary of changes:
 common/cmake_modules/MakeDist.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)