[PATCH] user32/tests: Fix the clipboard CF_LOCALE test.

[Francois Gouget]

On Thu, 20 May 2021, Marvin wrote:
[...]
> === w1064 (32 bit report) ===
> 
> user32:
> clipboard.c:402: Test failed: GlobalGetAtomNameA should fail
> clipboard.c:403: Test failed: err -559038737

This is a preexisting failure though it is very rare; there are only two 
instances on record:

https://test.winehq.org/data/39263558a2088940aaacd6eda19ca23d40b63495/win81_cw-gtx560-32/user32:clipboard.html
https://test.winehq.org/data/39263558a2088940aaacd6eda19ca23d40b63495/win81_cw-gtx560-64/user32:clipboard.html

I think the issue is that the test essentially assumes that picking an 
integer at random will not yield a valid global atom. But the 
probability that it does is about <number-of-global-atoms-in-use> / 
0xc000, which may well be above 1/100.

I'm sending a patch to fix it.

-- 
Francois Gouget <fgouget at codeweavers.com>