string: Added missing errno. (cherry picked from commit d536cc4f399eabb0ca3dec5bf8b2bf2dc168bf60)
string: Added missing errno.
(cherry picked from commit d536cc4f399eabb0ca3dec5bf8b2bf2dc168bf60)

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