srv_sftp: Set error messages in sftp_get_client_message(). (cherry picked from commit 4d38b4c8486c2ab56c0a30cf5d77db3c03354d07)
srv_sftp: Set error messages in sftp_get_client_message().
(cherry picked from commit 4d38b4c8486c2ab56c0a30cf5d77db3c03354d07)

mwgoldsmith/ssh,miloj/libssh-v0.5,miloj/libssh-v0.5,mwgoldsmith/ssh,mwgoldsmith/ssh,mwgoldsmith/libssh,mwgoldsmith/ssh,mwgoldsmith/libssh,mwgoldsmith/libssh,mwgoldsmith/libssh,miloj/libssh-v0.5,miloj/libssh-v0.5