gnucash unstable: Fix a few travis failures (potentially uninitialized use)

[Geert Janssens]

Updated	 via  https://github.com/Gnucash/gnucash/commit/060e16b6 (commit)
	from  https://github.com/Gnucash/gnucash/commit/75fb4e7a (commit)



commit 060e16b671cf1dbce28c5d29b21a2c55f55670bf
Author: Geert Janssens <geert at kobaltwit.be>
Date:   Sat Nov 18 20:41:10 2017 +0100

    Fix a few travis failures (potentially uninitialized use)



Summary of changes:
 gnucash/gnome/dialog-payment.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)