net: do not add multiple connect and finish listeners when multiple Socket.destroySoon's were scheduled
#345
| Job | Run time |
|---|---|
| 1m 19s | |
| 28m 43s | |
| 23m 12s | |
| 1h 13m 37s | |
| 24m 27s | |
| 2h 31m 18s |