MFC r287717:
Cleanup the handling of error causes for ERROR chunks. This fixes
an inconsistency of the padding handling. The final padding is
now considered to be a chunk padding.

MFC 273168:

Fix the reported streams in a SCTP_STREAM_RESET_EVENT, if a
sent incoming stream reset request was responded with failed
or denied.
Thanks to Peter Bostroem from Google for reporting the issue.

MFC r269376:

Cleanup sctp_send_initiate() and sctp_send_initiate_ack() to be
in sync as much as possible. This simplifies upcoming changes.

MFC 273168:

Fix the reported streams in a SCTP_STREAM_RESET_EVENT, if a
sent incoming stream reset request was responded with failed
or denied.
Thanks to Peter Bostroem from Google for reporting the issue.

MFC r269376:

Cleanup sctp_send_initiate() and sctp_send_initiate_ack() to be
in sync as much as possible. This simplifies upcoming changes.