BUG/MEDIUM: fcgi: fix missing list tail in sample fetch registration

Ilya reported in bug #300 that ASAN found a read overflow during startup
in the fcgi code due to a missing empty element at the end of the list
of sample fetches. The effect is that will randomly either work or crash
on startup.

No backport is needed, this is solely for 2.1-dev.
1 file changed