Merge branch 'sctp-shrink-stream-outq-in-the-right-place'

Xin Long says:

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sctp: shrink stream outq in the right place

Patch 1 is an improvement, and Patch 2 is a bug fix.
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Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>