gnucash maint: [new-owner-report] fix signs for vendor/employee reports

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/509c542a (commit)
	from  https://github.com/Gnucash/gnucash/commit/c520c5af (commit)



commit 509c542a9aa7c254eb49406dcf6e54b233eabc70
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Thu Nov 14 10:16:52 2019 +0800

    [new-owner-report] fix signs for vendor/employee reports
    
    Handling AP account splits mean we must negate some amounts for
    processing and display.



Summary of changes:
 gnucash/report/business-reports/new-owner-report.scm | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)