nsh_dd: fix lseek return check. #1
| Job | Run time |
|---|---|
| 1m 27s | |
| 24m 22s | |
| 44m 17s | |
| 54m 20s | |
| 1h 27m 15s | |
| 59m 7s | |
| 1h 33m 58s | |
| 35m 4s | |
| 37m 32s | |
| 59m 13s | |
| 56m 37s | |
| 42m 31s | |
| 41m 18s | |
| 35m 41s | |
| 26m 11s | |
| 34m 10s | |
| 53m 1s | |
| 50m 43s | |
| 46m 39s | |
| 57m 33s | |
| 56m 58s | |
| 56m 53s | |
| 23m 52s | |
| 56m 57s | |
| 35m 17s | |
| 19h 30m 56s |