gnucash maint: Fix incorrect signature error with Cmake >= 3.6 and Webkit1.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/c675b5b5 (commit)
	from  https://github.com/Gnucash/gnucash/commit/355d28e7 (commit)



commit c675b5b5e4f8d52247829c8a80664e73915229cf
Author: Matthew Forbis <mdforbis at forbii.com>
Date:   Fri Sep 13 10:52:28 2019 -0700

    Fix incorrect signature error with Cmake >= 3.6 and Webkit1.



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