[devhelp] KeywordModel: check GtkTreePath depth in get_iter()

[Sébastien Wilmet <swilmet src gnome org>]

commit ba96930f2ee33c515786413c45d424e2a7b98902
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Jan 20 20:59:11 2018 +0100

    KeywordModel: check GtkTreePath depth in get_iter()
    
    And have an implementation similar to iter_nth_child().
    g_queue_peek_nth_link() already checks the length.

 src/dh-keyword-model.c |   19 +++++++++++--------
 1 files changed, 11 insertions(+), 8 deletions(-)
---
diff --git a/src/dh-keyword-model.c b/src/dh-keyword-model.c
index 6ff06e4..15a8fe5 100644
--- a/src/dh-keyword-model.c
+++ b/src/dh-keyword-model.c
@@ -149,27 +149,30 @@ dh_keyword_model_get_iter (GtkTreeModel *tree_model,
                            GtkTreePath  *path)
 {
         DhKeywordModelPrivate *priv;
-        GList *node;
         const gint *indices;
+        GList *node;
 
         priv = dh_keyword_model_get_instance_private (DH_KEYWORD_MODEL (tree_model));
 
-        indices = gtk_tree_path_get_indices (path);
-
-        if (indices == NULL) {
+        if (gtk_tree_path_get_depth (path) > 1) {
                 return FALSE;
         }
 
-        if (indices[0] >= (gint)priv->links.length) {
+        indices = gtk_tree_path_get_indices (path);
+
+        if (indices == NULL) {
                 return FALSE;
         }
 
         node = g_queue_peek_nth_link (&priv->links, indices[0]);
 
-        iter->stamp = priv->stamp;
-        iter->user_data = node;
+        if (node != NULL) {
+                iter->stamp = priv->stamp;
+                iter->user_data = node;
+                return TRUE;
+        }
 
-        return TRUE;
+        return FALSE;
 }
 
 static GtkTreePath *