gnucash master: Fix distcheck for chartjs

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/598c374c (commit)
	from  https://github.com/Gnucash/gnucash/commit/fc3579fc (commit)



commit 598c374c920c47205d7b40d686bd08b8d4a9c1e9
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Thu Jun 6 18:53:57 2019 +0200

    Fix distcheck for chartjs



Summary of changes:
 borrowed/chartjs/CMakeLists.txt | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)