gnucash master: Fix GtkCellRenderer* leak in price import

[Christopher Lam]

Updated	 via  https://github.com/Gnucash/gnucash/commit/52a713e0 (commit)
	from  https://github.com/Gnucash/gnucash/commit/f9ebbf60 (commit)



commit 52a713e0093d072d18760a40e9ed00f4d2757991
Author: Christopher Lam <christopher.lck at gmail.com>
Date:   Tue Mar 14 20:43:08 2023 +0800

    Fix GtkCellRenderer* leak in price import



Summary of changes:
 gnucash/import-export/csv-imp/assistant-csv-price-import.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)