MINOR: mux-quic: remove qcc_decode_qcs() call in XPRT

Slightly change the interface for qcc_recv() between MUX and XPRT. The
MUX is now responsible to call qcc_decode_qcs(). This is cleaner as now
the XPRT does not have to deal with an extra QCS parameter and the MUX
will call qcc_decode_qcs() only if really needed.

This change is possible since there is no extra buffering for
out-of-order STREAM frames and the XPRT does not have to handle buffered
frames.
3 files changed