gnucash maint: Resolve 'basic_string::_M_construct null not valid' error when no database is provided in connection string

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash/commit/d5297a46 (commit)
	from  https://github.com/Gnucash/gnucash/commit/548ee9f5 (commit)



commit d5297a46bf121a35bea97854c4dbc9bd94a65163
Author: loftx <dev at loftx.co.uk>
Date:   Tue Feb 26 15:37:01 2019 +0100

    Resolve 'basic_string::_M_construct null not valid' error when no database is provided in connection string



Summary of changes:
 libgnucash/backend/dbi/gnc-backend-dbi.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)