Fix SSL breakage due to recent is_closed functionality
Fix SSL breakage due to recent is_closed functionality

We didn't proxy these functions properly in the SSL code.

Change-Id: I000bbb012c38a0dfeb07ec241fdf62b8eec8bbe2
Reviewed-on: http://review.couchbase.org/43161
Reviewed-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Tested-by: Mark Nunberg <e7d42768707bf23038325b0b68d4b577e5f6064a@haskalah.org>

senthilkumaranb/libcouchbase,PureSwift/libcouchbase,PureSwift/libcouchbase,mody/libcouchbase,senthilkumaranb/libcouchbase,maxim-ky/libcouchbase,avsej/libcouchbase,mody/libcouchbase,maxim-ky/libcouchbase,senthilkumaranb/libcouchbase,mody/libcouchbase,signmotion/libcouchbase,avsej/libcouchbase,kojiromike/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,mnunberg/libcouchbase,avsej/libcouchbase,signmotion/libcouchbase,mnunberg/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,senthilkumaranb/libcouchbase,maxim-ky/libcouchbase,kojiromike/libcouchbase,maxim-ky/libcouchbase,signmotion/libcouchbase,signmotion/libcouchbase,couchbase/libcouchbase,kojiromike/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,mnunberg/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,PureSwift/libcouchbase,couchbase/libcouchbase,couchbase/libcouchbase,PureSwift/libcouchbase,mnunberg/libcouchbase,couchbase/libcouchbase,mnunberg/libcouchbase