nsd: fix openssl path in nsd-control-setup

Closes #26002

pkgs/servers/dns/nsd/default.nix

···
     sha256 = "1cmaddfjb7yr87gjd5yv4d0qng0j97sy5rw5m3zxsp6c4fnng0vz";
   };
 
+  prePatch = ''
+    substituteInPlace nsd-control-setup.sh.in --replace openssl ${openssl}/bin/openssl
+  '';
+
   buildInputs = [ libevent openssl ];
 
   configureFlags =