[PATCH v2] secur32: Set error flag on pull callback.

[Alistair Leslie-Hughes]

Fixes a regression introduced in b8aaf86b2dbb8ecb3f7094cc40a0df89bb2add27

Partial revert the pull_timeout function, which now return -1 and sets the
transport error to try again.

Wine-bug: https://bugs.winehq.org/show_bug.cgi?id=51440

Signed-off-by: Alistair Leslie-Hughes 
---
 dlls/secur32/schannel_gnutls.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/dlls/secur32/schannel_gnutls.c b/dlls/secur32/schannel_gnutls.c
index bcf38e3f23f..4d8109721ce 100644
--- a/dlls/secur32/schannel_gnutls.c
+++ b/dlls/secur32/schannel_gnutls.c
@@ -292,7 +292,15 @@ static DWORD CDECL schan_get_enabled_protocols(void)

static int pull_timeout(gnutls_transport_ptr_t transport, unsigned int timeout)
 {
-    return 0;
+    struct schan_transport *t = (struct schan_transport*)transport;
+    gnutls_session_t s = (gnutls_session_t)callbacks->get_session_for_transport(t);
+    SIZE_T count = 0;
+
+    TRACE("\n");
+
+    if (callbacks->get_buffer(t, &t->in, &count)) return 1;
+    pgnutls_transport_set_errno(s, EAGAIN);
+    return -1;
 }

static BOOL CDECL schan_create_session(schan_session *session, schan_credentials *cred)