The post_insert_fixup helper function was confused about
its argument order.
Pointed out in https://www.viva64.com/en/b/0793/
static GtkTextLine * get_last_line (GtkTextBTree *tree);
static void post_insert_fixup (GtkTextBTree *tree,
GtkTextLine *insert_line,
- int char_count_delta,
- int line_count_delta);
+ int line_count_delta,
+ int char_count_delta);
static void gtk_text_btree_node_adjust_toggle_count (GtkTextBTreeNode *node,
GtkTextTagInfo *info,
int adjust);