CVE-2012-4559: Ensure we don't free blob or request twice.
CVE-2012-4559: Ensure we don't free blob or request twice.

mwgoldsmith/libssh,mwgoldsmith/ssh,mwgoldsmith/ssh,mwgoldsmith/ssh,mwgoldsmith/ssh,mwgoldsmith/libssh,mwgoldsmith/libssh,mwgoldsmith/libssh