tests/qapi: use ARRAY_SIZE macro

Applied using the Coccinelle semantic patch scripts/coccinelle/use_osdep.cocci
Signed-off-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>

tests/test-string-output-visitor.c

@@ -95,7 +95,7 @@ static void test_visitor_out_intList(TestOutputVisitorData *data,
     Error *err = NULL;
     char *str;
 
-    for (i = 0; i < sizeof(value) / sizeof(value[0]); i++) {
+    for (i = 0; i < ARRAY_SIZE(value); i++) {
         *tmp = g_malloc0(sizeof(**tmp));
         (*tmp)->value = value[i];
         tmp = &(*tmp)->next;