checker: fix missing option variable checking when casting using as operator
#8955
| Job | Run time |
|---|---|
| 30m 6s | |
| 21m 13s | |
| 32m 22s | |
| 1h 23m 41s |
as operator
#8955
| Job | Run time |
|---|---|
| 30m 6s | |
| 21m 13s | |
| 32m 22s | |
| 1h 23m 41s |