jwhois: Add missing meta.platforms

+1
+1
pkgs/tools/networking/jwhois/default.nix
··· 16 16 description = "A client for the WHOIS protocol allowing you to query the owner of a domain name"; 17 17 homepage = http://www.gnu.org/software/jwhois/; 18 18 license = "GPL"; 19 + platforms = stdenv.lib.platforms.linux; 19 20 }; 20 21 }