[core] STAILQ_* -> SIMPLEQ_* on OpenBSD

(thx brad)

src/ls-hpack/lshpack.h

@@ -221,6 +221,18 @@ lshpack_dec_set_max_capacity (struct lshpack_dec *, unsigned);
 
 #include <sys/queue.h>
 
+#ifdef __OpenBSD__
+#define STAILQ_HEAD             SIMPLEQ_HEAD
+#define STAILQ_ENTRY            SIMPLEQ_ENTRY
+#define STAILQ_INIT             SIMPLEQ_INIT
+#define STAILQ_INSERT_TAIL      SIMPLEQ_INSERT_TAIL
+#define STAILQ_EMPTY            SIMPLEQ_EMPTY
+#define STAILQ_FIRST            SIMPLEQ_FIRST
+#define STAILQ_NEXT             SIMPLEQ_NEXT
+#define STAILQ_REMOVE_HEAD      SIMPLEQ_REMOVE_HEAD
+#define STAILQ_FOREACH          SIMPLEQ_FOREACH
+#endif
+
 struct lshpack_enc_table_entry;
 
 STAILQ_HEAD(lshpack_enc_head, lshpack_enc_table_entry);