CPT-61 Revert upstream change in ir_attachment.py

Commit:
d3a6a20

odoo/addons/base/models/ir_attachment.py

@@ -450,10 +450,10 @@ def check(self, mode, values=None):
             self.env['ir.attachment'].flush(['res_model', 'res_id', 'create_uid', 'public', 'res_field'])
             self._cr.execute('SELECT res_model, res_id, create_uid, public, res_field FROM ir_attachment WHERE id IN %s', [tuple(self.ids)])
             for res_model, res_id, create_uid, public, res_field in self._cr.fetchall():
+                if not self.env.is_system() and res_field:
+                    raise AccessError(_("Sorry, you are not allowed to access this document."))
                 if public and mode == 'read':
                     continue
-                if not self.env.is_system() and (res_field or (not res_id and create_uid != self.env.uid)):
-                    raise AccessError(_("Sorry, you are not allowed to access this document."))
                 if not (res_model and res_id):
                     continue
                 model_ids[res_model].add(res_id)