lws_ring: use __mtail instead of hardcoded tail
Changed harcoded member name "tail" into ___mtail in lws_ring_consume_and_update_oldest_tail macro.
diff --git a/include/libwebsockets/lws-ring.h b/include/libwebsockets/lws-ring.h
index ba2ac11..2343fa2 100644
--- a/include/libwebsockets/lws-ring.h
+++ b/include/libwebsockets/lws-ring.h
@@ -278,10 +278,10 @@
___oldest = *(___ptail); \
lws_start_foreach_llp(___type **, ___ppss, ___list_head) { \
___m = lws_ring_get_count_waiting_elements( \
- ___ring, &(*___ppss)->tail); \
+ ___ring, &(*___ppss)->___mtail); \
if (___m >= ___n) { \
___n = ___m; \
- ___oldest = (*___ppss)->tail; \
+ ___oldest = (*___ppss)->___mtail; \
} \
} lws_end_foreach_llp(___ppss, ___mlist); \
\
