avltree: Fix "avltree_first".

git-svn-id: http://gpsbabel.googlecode.com/svn/trunk@3564 f51c46e8-681c-474f-0cfe-069cfd0219fb

diff --git a/gpsbabel/avltree.c b/gpsbabel/avltree.c
index 2726ef713e02e0c1c6393592b6feb9346a4b06d1..d6e7fb25e9aa0ac4cc8f079ef1725e84134cf94d 100644 (file)
--- a/gpsbabel/avltree.c
+++ b/gpsbabel/avltree.c
@@ -195,7 +195,18 @@ avltree_find(const avltree_t *tree, const char *key, const void **data)
 const char *
 avltree_first(const avltree_t *tree, const void **data)
 {
-       return avltree_next(tree, NULL, data);
+       avlnode_t *node;
+
+       AVLTREE_CHECK_HANDLE(tree);
+
+       node = tree->root;
+       if (! node) return NULL;
+       
+       while (node->left) node = node->left;
+       avltree_save_key((avltree_t *)tree, node->key);
+       if (data) (*data) = node->data;
+
+       return tree->key;
 }