[FIX] account: Fix missing parenthesis in reversal wizard

closes odoo/odoo#38095

X-original-commit: 431d6058afe71efa6078cb5d18c547ee2a910484
Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>

addons/account/wizard/account_move_reversal.py

@@ -21,7 +21,7 @@ class AccountMoveReversal(models.TransientModel):
         return self.env['account.move']
 
     move_id = fields.Many2one('account.move', string='Journal Entry',
-        default=lambda self: self._get_default_move,
+        default=lambda self: self._get_default_move(),
         domain=[('state', '=', 'posted'), ('type', 'not in', ('out_refund', 'in_refund'))])
     date = fields.Date(string='Reversal date', default=fields.Date.context_today, required=True)
     reason = fields.Char(string='Reason')