bluetooth: make bnep_sock_cleanup() return void
bnep_sock_cleanup() always returns 0 and its return value isn't used anywhere in the code. Signed-off-by: NTobias Klauser <tklauser@distanz.ch> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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