Call skb_orphan(skb) to call the owner's destructor function and make
the skb unowned.
This is necessary to prevent sk_wmem_alloc of a socket from overflowing,
which leads to ENOBUFS errors on application level.
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
(cherry picked from commit 996f02e5bafad2815e72821c19d41fb5297e4dad)
3212290a3b