Don't check for timeout before sending first PING

[nmeum]

While debugging the problem described in #50 (comment) further I noticed that they seem to be some edge cases where the pingLoop exits with a timeout before the first PING message is sent. This causes PING timeouts very shortly after reconnecting, for example:

2022-06-07_21:51:47.09441 hii.go:769: timed out waiting for a requested PING response
2022-06-07_22:54:57.25356 hii.go:769: timed out waiting for a requested PING response
2022-06-07_22:56:27.37343 hii.go:769: timed out waiting for a requested PING response
2022-06-07_22:57:57.46345 hii.go:769: timed out waiting for a requested PING response

Looking at the pingLoop implementation, the timeout check is performed before the PING message is sent. This commit adds such a check as an additional safeguard thereby not only relying on timing.

[yunginnanet]

Big ups, player