Bugfix: Clear stratum receive buffer when initializing, in case there was extra unprocessed data in it from a previous connection

util.c

@@ -1342,6 +1342,7 @@ bool initiate_stratum(struct pool *pool)
 		if (unlikely(!pool->stratum_curl))
 			quit(1, "Failed to curl_easy_init in initiate_stratum");
 	}
+	pool->readbuf.len = 0;
 	mutex_unlock(&pool->stratum_lock);
 	curl = pool->stratum_curl;