crt: test: Explicitly use CreateEventA() in t_safe_flush.c

This ensures that always ANSI variant is of the function is used.

Signed-off-by: LIU Hao <lh_mouse@126.com>

mingw-w64-crt/testcases/t_safe_flush.c

diff --git a/mingw-w64-crt/testcases/t_safe_flush.c b/mingw-w64-crt/testcases/t_safe_flush.c
index 5e617fa..a51d8d2 100644
--- a/mingw-w64-crt/testcases/t_safe_flush.c
+++ b/mingw-w64-crt/testcases/t_safe_flush.c
@@ -33,7 +33,7 @@
 static void spawn_thread(void) {
     HANDLE handle_event;
 
-    assert(handle_event = CreateEvent(NULL, TRUE, FALSE, NULL));
+    assert(handle_event = CreateEventA(NULL, TRUE, FALSE, NULL));
     assert(CreateThread(NULL, 0, thread_main, handle_event, 0, NULL) != NULL);
     assert(WaitForSingleObject(handle_event, INFINITE) == WAIT_OBJECT_0);
     assert(CloseHandle(handle_event));