forward declare dns_cache_t in <dns/types.h>

diff --git a/lib/dns/include/dns/types.h b/lib/dns/include/dns/types.h
index 4e37fc4c6e190293257e8edae5dc954b534acb41..2342d82bb8ea8eafdc9fb0b3e15939acea7aa5f7 100644 (file)
--- a/lib/dns/include/dns/types.h
+++ b/lib/dns/include/dns/types.h
@@ -86,6 +86,7 @@ typedef struct dns_zone_callbackarg           dns_zone_callbackarg_t;
 typedef struct dns_a6context                   dns_a6context_t;
 typedef struct dns_rbt                         dns_rbt_t;
 typedef struct dns_zt                          dns_zt_t;
+typedef struct dns_cache                       dns_cache_t;
 
 typedef enum {
        dns_labeltype_ordinary = 0,