Fix check for level zero headers #6507
| Job | Run time |
|---|---|
| 5m 14s | |
| 8m 9s | |
| 9m 11s | |
| 8m 30s | |
| 5m 31s | |
| 7m 55s | |
| 5m 25s | |
| 8m 35s | |
| 4m 33s | |
| 5m 43s | |
| 5m 24s | |
| 7m 46s | |
| 4m 9s | |
| 4m 41s | |
| 2m 25s | |
| 2m 29s | |
| 2m 34s | |
| 2m 27s | |
| 2m 30s | |
| 2m 38s | |
| -1s | |
| 3m 29s | |
| 3m 18s | |
| 3m 50s | |
| 3m 38s | |
| 3m 33s | |
| 4m 14s | |
| -1s | |
| -1s | |
| 2h 7m 48s |