thttpd: Fix SHA256 of the upstream tarball.

It's a bit unfortunate to see this, but while looking online to download
the old version of the file I found that MacPorts and FreeBSD had the
same issue:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199562

I've checked the diff as well and found no big functional changes,
except a function rename, copyright updates and changed syslog
priorities:

https://bz-attachments.freebsd.org/attachment.cgi?id=155775

Signed-off-by: aszlig <[e-mail]>

pkgs/servers/http/thttpd/default.nix

···
 
   src = fetchurl {
     url = "http://acme.com/software/thttpd/${name}.tar.gz";
-    sha256 = "1dybhpyfrly0m285cdn9jah397bqzylrwzi26gin2h451z3gdcqm";
+    sha256 = "1idlpnwrd5fpmnfh477h1lzanavx8jxir2d8adax46zy472dg4s6";
   };
 
   prePatch = ''