kernel32/tests: Make initonce_callback() static.

[Francois Gouget]

---
 dlls/kernel32/tests/sync.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/kernel32/tests/sync.c b/dlls/kernel32/tests/sync.c
index ed30e26..5ce8f09 100644
--- a/dlls/kernel32/tests/sync.c
+++ b/dlls/kernel32/tests/sync.c
@@ -1142,7 +1142,7 @@ static void test_WaitForMultipleObjects(void)
 static BOOL g_initcallback_ret, g_initcallback_called;
 static void *g_initctxt;
 
-BOOL CALLBACK initonce_callback(INIT_ONCE *initonce, void *parameter, void **ctxt)
+static BOOL CALLBACK initonce_callback(INIT_ONCE *initonce, void *parameter, void **ctxt)
 {
     g_initcallback_called = TRUE;
     /* zero bit set means here that initialization is taking place - initialization locked */
-- 
1.7.10.4