su_tag_inline.h: fixed t_xtra() return type (size_t instead of int).

darcs-hash:20060906225635-65a35-8cbca09714667f5af2f6cda836088803f05bd655.gz

libsofia-sip-ua/su/sofia-sip/su_tag_inline.h

@@ -86,7 +86,7 @@ static inline tagi_t *t_move(tagi_t *dst, tagi_t const *src)
   return dst + 1;
 }
 
-static inline int t_xtra(tagi_t const *t, intptr_t offset)
+static inline size_t t_xtra(tagi_t const *t, size_t offset)
 {
   tag_type_t tt = TAG_TYPE_OF(t);