keyfiles: Fixed compilation without defines.
keyfiles: Fixed compilation without defines.

This fixes cppcheck issues.
(cherry picked from commit 7f0761885cb21c2013f7b0fc562187a1909a2048)

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