options/ansi: fix stack corruption in do_scanf #5290
| Job | Run time | 
|---|---|
| 1m 46s | |
| 2m 51s | |
| 1m 42s | |
| 1m 48s | |
| 1m 51s | |
| 2m 0s | |
| 1m 44s | |
| 1m 32s | |
| 1m 53s | |
| 1m 49s | |
| 1m 30s | |
| 2m 30s | |
| 2m 49s | |
| 5m 47s | |
| 3m 28s | |
| 1m 38s | |
| 3m 8s | |
| 2m 50s | |
| 3m 9s | |
| 3m 11s | |
| 3m 48s | |
| 3m 6s | |
| 2m 53s | |
| 2m 40s | |
| 3m 2s | |
| 2m 50s | |
| 2m 33s | |
| 3m 59s | |
| 4m 9s | |
| 1m 45s | |
| 1m 33s | |
| 3m 33s | |
| 1m 24s | |
| 2m 49s | |
| 2m 41s | |
| 3m 56s | |
| 2m 43s | |
| 1m 40s | |
| 5m 52s | |
| 2m 54s | |
| 3m 8s | |
| 1h 51m 54s |