trie_findfirst: fix subtle bug with struct reusal

diff --git a/src/map_trie.c b/src/map_trie.c
index e91e082..2f2dc66 100644 (file)
--- a/src/map_trie.c
+++ b/src/map_trie.c
@@ -171,9 +171,9 @@ int map_findfirst(map_find_t *pf, map_t *root) {
                f = *pf = malloc(sizeof(*f));
                if (!f)
                        return -1;
-               f->_len = 0;
        }
        f->_n = *root;
+       f->_len = 0;
        if (f->_n->value) {
                f->key[f->_len] = '\0';
                f->value = f->_n->value;