Bugfix abWebsocket_peer frame handling
Bugfix abWebsocket_peer frame handling

Add special handling, if the payload length is 0.

mloy/cjet,gatzka/cjet,mloy/cjet,mloy/cjet,gatzka/cjet,gatzka/cjet,mloy/cjet,gatzka/cjet,gatzka/cjet,mloy/cjet