fix(dns): don't exit early on no hosts in hosts file

If we don't have any hosts specified we'll still not generate any
overrides which is fine, but we'll continue onto actually trying to
resolve the hostname we came into the function for initially.

core/net/dns_unix.odin

@@ -44,9 +44,6 @@ _get_dns_records_os :: proc(hostname: string, type: DNS_Record_Type, allocator :
 	if !hosts_ok {
 		return nil, .Invalid_Hosts_Config_Error
 	}
-	if len(hosts) == 0 {
-		return
-	}
 
 	host_overrides := make([dynamic]DNS_Record)
 	for host in hosts {
@@ -80,4 +77,4 @@ _get_dns_records_os :: proc(hostname: string, type: DNS_Record_Type, allocator :
 	}
 
 	return get_dns_records_from_nameservers(hostname, type, name_servers, host_overrides[:])
-}
+}