Error raised on invalid STmin value rather than using maximum default required in specification resulting in frame destruction #147
Description
When a flow control frame is received with an invalid STmin value, the specification states that the longest STmin value shall be used (ISO 15765-2:2016 - 9.6.5.5).
This implementation will raise a value error resulting in the destruction of the frame rather than using the default maximum time:
python-can-isotp/isotp/protocol.py
Line 164 in 4a672ce