[PATCH] kernel32: Improve tests for pUnregisterWait(0)

[Keno Fischer]

This addresses the review comments on the original thread in which
I introduced this test.

Signed-off-by: Keno Fischer <keno at juliacomputing.com>
---
 dlls/kernel32/tests/thread.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/dlls/kernel32/tests/thread.c b/dlls/kernel32/tests/thread.c
index 0a5f0d3..5cbb1fd 100644
--- a/dlls/kernel32/tests/thread.c
+++ b/dlls/kernel32/tests/thread.c
@@ -1246,9 +1246,12 @@ static void test_RegisterWaitForSingleObject(void)
     ret = pUnregisterWait(wait_handle);
     ok(ret, "UnregisterWait failed with error %d\n", GetLastError());
 
-    ret = pUnregisterWait(0);
-    ok(!ret && GetLastError() == ERROR_INVALID_HANDLE,
-        "UnregisterWait failed with unexpected error %d\n", GetLastError());
+    /* Test UnregisterWait NULL argument case */
+    SetLastError(0xDEADBEEF);
+    ret = pUnregisterWait(NULL);
+    ok(!ret, "Expected UnregisterWait to fail");
+    ok(GetLastError() == ERROR_INVALID_HANDLE,
+       "Expected ERROR_INVALID_HANDLE, got %d\n", GetLastError());
 }
 
 static DWORD LS_main;
-- 
2.7.4