conn: windows: set count=0 on retry

When retrying, if count is not 0, we forget to dequeue another request,
and so the ring fills up and errors out.

Reported-by: Sascha Dierberg <dierberg@dresearch-fe.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

diff --git a/conn/bind_windows.go b/conn/bind_windows.go
index 42208b1767715055800a42862a0f95aca1c16e9f..d744987592ad792b2667e13ed219496ddb0103c3 100644 (file)
--- a/conn/bind_windows.go
+++ b/conn/bind_windows.go
@@ -357,6 +357,7 @@ func (bind *afWinRingBind) Receive(buf []byte, isOpen *uint32) (int, Endpoint, e
        var count uint32
        var results [1]winrio.Result
 retry:
+       count = 0
        for tries := 0; count == 0 && tries < receiveSpins; tries++ {
                if tries > 0 {
                        if atomic.LoadUint32(isOpen) != 1 {