tcp: restore fastopen operations

I accidentally cleared fastopenq.max_qlen in reqsk_queue_alloc()
while max_qlen can be set before listen() is called,
using TCP_FASTOPEN socket option for example.

Fixes: 0536fcc039a8 ("tcp: prepare fastopen code for upcoming listener changes")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/request_sock.c b/net/core/request_sock.c
index 15c8538..5d26056 100644
--- a/net/core/request_sock.c
+++ b/net/core/request_sock.c
@@ -45,7 +45,6 @@
 	queue->fastopenq.rskq_rst_head = NULL;
 	queue->fastopenq.rskq_rst_tail = NULL;
 	queue->fastopenq.qlen = 0;
-	queue->fastopenq.max_qlen = 0;
 
 	queue->rskq_accept_head = NULL;
 }