[Minor] Make function to punycode DNS values publicly available

contrib/librdns/packet.h

@@ -43,16 +43,6 @@ void rdns_allocate_packet (struct rdns_request* req, unsigned int namelen);
 void rdns_make_dns_header (struct rdns_request *req, unsigned int qcount);
 
 
-/**
- * Format DNS name of the packet
- * @param req request
- * @param name name string
- * @param namelen length of name
- */
-bool rdns_format_dns_name (struct rdns_resolver *resolver,
-		const char *name, size_t namelen,
-		char **out, size_t *outlen);
-
 /**
  * Add a resource record to the DNS packet
  * @param req request

contrib/librdns/rdns.h

@@ -382,6 +382,16 @@ const struct rdns_request_name* rdns_request_get_name (struct rdns_request *req,
  */
 char * rdns_generate_ptr_from_str (const char *str);
 
+/**
+ * Format DNS name of the packet punycoding if needed
+ * @param req request
+ * @param name name string
+ * @param namelen length of name
+ */
+bool rdns_format_dns_name (struct rdns_resolver *resolver,
+		const char *name, size_t namelen,
+		char **out, size_t *outlen);
+
 /*
  * Private functions used by async libraries as callbacks
  */