example/sftp_RW_nonblock: do not ignore LIBSSH2_ERROR_EAGAIN
example/sftp_RW_nonblock: do not ignore LIBSSH2_ERROR_EAGAIN

Bug: https://bugzilla.redhat.com/745420

libssh2/libssh2,libssh2/libssh2,libssh2/libssh2,libssh2/libssh2