If USER and HOME environments both exists, never do getpwuid() lookup. If HOME doesn't exist, do the lookup but don't fail unless also USER doesn't exist.
If USER and HOME environments both exists, never do getpwuid() lookup. If
HOME doesn't exist, do the lookup but don't fail unless also USER doesn't
exist.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot