As it is always set to GetCurrentThreadId().

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=26269
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=27238
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=31899
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=35907
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=45385Signed-off-by: Rémi Bernon <rbernon@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>