[PATCH v2 0/2] MR1886: Fixing paste errors on edit control in Win10+.

[eric pouech (＠epo)]

This series tries to fix WM_PASTE tests error on edit control (both user32 & comctl32).

The test failures where systematic on a local Win10 for comctl32 (yet very rare on
user32, perhaps one in 20 runs).

Since the failures are not systematic, it ought to be a synchronisation / timing
issue.

Flushing the msg queue before starting the paste test cycle seems to fix the issue.
- 0 occurence on comctl32 and user32 in 50 run (local VM)
- 0 occurence on Testbot (comctl32) in 1 run.

It's hard to be fully conclusive about bug resolution, but it's at least a step into
the right direction.

--
  v2: comctl32/tests: Fix failing WM_PASTE tests for edit control on Win10+.
      user32/tests: Fix failing WM_PASTE tests for edit control on Win10+.

https://gitlab.winehq.org/wine/wine/-/merge_requests/1886