[FIX] account: fix default_get of account move lines

Obvious typo of 67d82b875c.

opw 2046137

closes odoo/odoo#35939

Signed-off-by: Nans Lefebvre (len) <len@odoo.com>

addons/account/models/account_move.py

@@ -490,7 +490,7 @@ class AccountMoveLine(models.Model):
                 'line_ids', self._context['line_ids'], fields=['credit', 'debit']):
             balance += line.get('debit', 0) - line.get('credit', 0)
         # if we are here, line_ids is in context, so journal_id should also be.
-        currency = self._context.get('journal_id') and self.browse(self._context['journal_id']).company_id.currency_id
+        currency = self._context.get('journal_id') and self.env["account.journal"].browse(self._context['journal_id']).company_id.currency_id
         if currency:
             balance = currency.round(balance)
         if balance < 0: