Timeout incorrect in SetTx function

[Pete9008]

The Timeout is incorrectly calculated in SetTx meaning that the transmission fails on longer or slow messages, see 5f63e8a for details.
Many thanks.

[Cale-Torino]

@Pete9008

1000% correct I was getting very low power output... wasted a lot of time almost went to another library.
Then after changing the time to uint32_t tout = (uint32_t)(timeoutInMs * (1.0/0.015625)); all of a sudden everything worked as intended.

Here's some images for visual aid:

Wimpy signal with uint32_t tout = (uint32_t)(timeoutInMs * 0.015625);

Chad signal with uint32_t tout = (uint32_t)(timeoutInMs * (1.0/0.015625));