Don't call memory.deallocate for NULL memory (#59)
#250
| Job | Run time |
|---|---|
| 3m 22s | |
| 1m 52s | |
| 3m 11s | |
| 1m 5s | |
| 2m 4s | |
| 2m 2s | |
| 1m 45s | |
| 1m 13s | |
| 2m 14s | |
| 2m 8s | |
| 1m 20s | |
| 1m 32s | |
| 1m 13s | |
| 0s | |
| 2m 28s | |
| 11s | |
| 27m 40s |