Merge branch 'mptcp-fixes'

Merge branch 'mptcp-fixes'

Mat Martineau says:

====================
mptcp: A few fixes

This set has three separate changes for the net-next tree:

Patch 1 guarantees safe handling and a warning if a NULL value is
encountered when gathering subflow data for the MPTCP_SUBFLOW_ADDRS
socket option.

Patch 2 increases the default number of subflows allowed per MPTCP
connection.

Patch 3 makes an existing function 'static'.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>