* Guard against set-but-empty REMOTE_USER CGI variable on
misconfigured nginx servers, and in general treat sessions with
a set-but-empty name as if they were not signed in.
+ * When the CGI fails, print the error to stderr, not "Died"
-- Simon McVittie <smcv@debian.org> Sun, 14 May 2017 15:34:52 +0100