fix static analysis warning

diff --git a/src/lib/util/struct.c b/src/lib/util/struct.c
index c993bece42a87b4811e8c464bc6117ced362eab0..c1ce8cf48795684108b26d775a42e35ed26a0e58 100644 (file)
--- a/src/lib/util/struct.c
+++ b/src/lib/util/struct.c
@@ -30,6 +30,10 @@ VALUE_PAIR *fr_unknown_from_network(TALLOC_CTX *ctx, fr_dict_attr_t const *paren
        VALUE_PAIR *vp;
        fr_dict_attr_t const *child;
 
+#ifndef NDEBUG
+       if (!parent->parent) return NULL; /* stupid static analyzers */
+#endif
+
        /*
         *      Build an unknown attr of the entire STRUCT.
         */