SKIP instead of ERROR if opentype/slant_direction's reference codepoint is not covered
#2240
| Job | Run time |
|---|---|
| 1m 2s | |
| 1m 50s | |
| 3m 43s | |
| 1m 25s | |
| 1m 32s | |
| 2m 38s | |
| 3m 2s | |
| 2m 12s | |
| 4m 54s | |
| 3m 6s | |
| 3m 26s | |
| 3m 4s | |
| 2m 43s | |
| 34m 37s |