checker: fix missing option variable checking when casting using as operator
#12190
| Job | Run time |
|---|---|
| 1m 45s | |
| 2m 27s | |
| 4m 12s |
as operator
#12190
| Job | Run time |
|---|---|
| 1m 45s | |
| 2m 27s | |
| 4m 12s |