[FIX] stock: use same picking_type_id

closes odoo/odoo#46715

Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>

addons/stock/models/stock_move.py

@@ -537,16 +537,17 @@ class StockMove(models.Model):
         """
         self.ensure_one()
 
+        picking_type_id = self.picking_type_id or self.picking_id.picking_type_id
+        
         # If "show suggestions" is not checked on the picking type, we have to filter out the
         # reserved move lines. We do this by displaying `move_line_nosuggest_ids`. We use
         # different views to display one field or another so that the webclient doesn't have to
         # fetch both.
-        if self.picking_id.picking_type_id.show_reserved:
+        if picking_type_id.show_reserved:
             view = self.env.ref('stock.view_stock_move_operations')
         else:
             view = self.env.ref('stock.view_stock_move_nosuggest_operations')
 
-        picking_type_id = self.picking_type_id or self.picking_id.picking_type_id
         return {
             'name': _('Detailed Operations'),
             'type': 'ir.actions.act_window',