Use a larger memory limit by default than was chosen at the beginning
of time. This is evidently necessary on many machines, including my
own, starting somewhere around December 2020.

https://bugs.gentoo.org/883159

diff -Naur a/tinydns-conf.c b/tinydns-conf.c
--- a/tinydns-conf.c	2001-02-11 21:11:45.000000000 +0000
+++ b/tinydns-conf.c	2021-11-08 17:23:06.181385437 +0000
@@ -46,7 +46,7 @@

   start("run");
   outs("#!/bin/sh\nexec 2>&1\nexec envuidgid "); outs(user);
-  outs(" envdir ./env softlimit -d300000 ");
+  outs(" envdir ./env softlimit -d4500000 ");
   outs(auto_home); outs("/bin/tinydns\n");
   finish();
   perm(0755);