patch fix - skip query if no when_then case

erpnext/patches/v11_0/create_department_records_for_each_company.py

@@ -47,6 +47,9 @@ def update_records(doctype, comp_dict):
 				THEN "%s"
 			'''%(company, department, records[department]))
 
+	if not when_then:
+		return
+
 	frappe.db.sql("""
 		update
 			`tab%s`