windows: do not corrupt stack with larger boolean return value

Windows type PBOOL is a pointer to a 4 byte value, where 0 means false
and not-0 means true. That means we should use uint32 here, not bool,
since Go bools can be 1 byte. This commit was re-generated using
mksyscall_windows.go from CL 196122.

Updates: golang/go#34364
Change-Id: I8e83b9a09c0b58d14ac9a7dee316553940ac6ee3
Reviewed-on: https://go-review.googlesource.com/c/sys/+/196123
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>

windows/zsyscall_windows.go

@@ -694,7 +694,14 @@ func ExitProcess(exitcode uint32) {
 }
 
 func IsWow64Process(handle Handle, isWow64 *bool) (err error) {
-	r1, _, e1 := syscall.Syscall(procIsWow64Process.Addr(), 2, uintptr(handle), uintptr(unsafe.Pointer(isWow64)), 0)
+	var _p0 uint32
+	if *isWow64 {
+		_p0 = 1
+	} else {
+		_p0 = 0
+	}
+	r1, _, e1 := syscall.Syscall(procIsWow64Process.Addr(), 2, uintptr(handle), uintptr(unsafe.Pointer(&_p0)), 0)
+	*isWow64 = _p0 != 0
 	if r1 == 0 {
 		if e1 != 0 {
 			err = errnoErr(e1)