The wtmp file tends to rotate higher rate than lastlog, so use the later as
fallback in when wtmp tells nothing in LAST-LOGIN column.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
This is the same fix as in reference commit, and the same reason. Just
correct few files missed earlier.
Reference: abbcec4fc9
Signed-off-by: Sami Kerola <kerolasa@iki.fi>