texthistory: fix potential NULL dereference

Fixes #6308
2024-01-04 09:39:34 -08:00
parent 1e1c973d71
commit dfe2141227
1 changed files with 2 additions and 1 deletions
--- a/gtk/gtktexthistory.c
+++ b/gtk/gtktexthistory.c
@@ -1103,7 +1103,8 @@ gtk_text_history_modified_changed (GtkTextHistory *self,
    {
      if (peek->kind == ACTION_KIND_BARRIER)
        {
-          if (!(peek = peek->link.next->data))
+          if (peek->link.next == NULL ||
+              !(peek = peek->link.next->data))
            return;
        }