user32: Fix 64-bit 'msg' test hang in test_timers (try 2).

[Dmitry Timoshkov]

"Erich E. Hoover" <ehoover at mines.edu> wrote:

>     The attached patch changes the test_timers() crash function to use
> RtlRaiseException (if available) rather than attempting to write to memory
> address 0.  This change stops the timer tests from hanging on the 64-bit VM.

Why not use kernel32.RaiseException (which is always available) instead?

-- 
Dmitry.