Don't allocate a new identity list in the new session's options.
Don't allocate a new identity list in the new session's options.

The previous list is not freed. Since the new session just got
created, an identity list is already allocated and empty.

Signed-off-by: Sebastien Boving <62d754cc350e84d3b1c32ae79f976f5348e74a40@google.com>
Reviewed-by: Andreas Schneider <5be00ddc76278cf6077f5047ca3384a88460c671@cryptomilk.org>

nviennot/libssh,sebadoom/libssh,pouete/libssh,kedazo/libssh,sebadoom/libssh,kedazo/libssh,nviennot/libssh,pouete/libssh,sebadoom/libssh,nviennot/libssh,pouete/libssh,kedazo/libssh,kedazo/libssh,pouete/libssh,sebadoom/libssh,nviennot/libssh