fix types for reply to

libs/sofia-sip/libsofia-sip-ua/sip/sip_extra.c

@@ -311,7 +311,7 @@ issize_t sip_alert_info_e(char b[], isize_t bsiz, sip_header_t const *h, int f)
  * {
  *   sip_common_t       rplyto_common[1]; // Common fragment info
 
- *   sip_error_t       *rplyto_next;	 // Dummy link to next header
+ *   sip_reply_to_t       *rplyto_next;	 // Dummy link to next header
  *   char const        *rplyto_display;	 // Display name
  *   url_t              rplyto_url[1];	 // Return URI
  *   msg_param_t const *rplyto_params;	 // List of optional parameters

libs/sofia-sip/libsofia-sip-ua/sip/sofia-sip/sip_extra.h.in

@@ -87,7 +87,7 @@ typedef struct sip_reply_to_s sip_reply_to_t;
 struct sip_reply_to_s
 {
   sip_common_t        rplyto_common[1];	/**< Common fragment info */
-  sip_error_t        *rplyto_next;	/**< Dummy link to next header */
+  sip_reply_to_t        *rplyto_next;	/**< Dummy link to next header */
   char const         *rplyto_display;	/**< Display name */
   url_t               rplyto_url[1];	/**< Return URI */
   msg_param_t const  *rplyto_params;	/**< List of optional parameters */