[PATCH 1/3] user32: Use a single lock in destroy_thread_windows.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek(a)codeweavers.com>
---
  dlls/user32/win.c | 40 +++++++++++++++++++++-------------------
  1 file changed, 21 insertions(+), 19 deletions(-)