[FIX] account: Fix a traceback in account_payment

When changing the journal of a payment that has already been saved by
one of another company, a traceback will occur because of writeoff lines.
This ensures that it will not happen.

closes odoo/odoo#72800

X-original-commit: b44a70284c52623061623d4793ffce29ea25487a
Signed-off-by: Laurent Smet <smetl@users.noreply.github.com>
Signed-off-by: Nicolas Viseur <vin-odoo@users.noreply.github.com>

addons/account/models/account_payment.py

@@ -830,8 +830,8 @@ class AccountPayment(models.Model):
             for line in writeoff_lines:
                 line_ids_commands.append((2, line.id))
 
-            if writeoff_lines:
-                line_ids_commands.append((0, 0, line_vals_list[2]))
+            for extra_line_vals in line_vals_list[2:]:
+                line_ids_commands.append((0, 0, extra_line_vals))
 
             # Update the existing journal items.
             # If dealing with multiple write-off lines, they are dropped and a new one is generated.