Fixes a regression introduced in b8aaf86b

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=51440Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Hans Leidekker <hans@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>