[stat_cache] fix compilation error for cmake
@@ -750,7 +750,7 @@ void stat_cache_delete_entry(server *srv, const char *name, size_t len)
}
}
-#if HAVE_FAM_H
+#ifdef HAVE_FAM_H
static void stat_cache_invalidate_entry(server *srv, const char *name, size_t len)
{
