[gnome-builder/wip/gtk4-port] plugins/clang: clear source upon destroy vfunc

[Christian Hergert <chergert src gnome org>]

commit 35bf745a81b1ccfe49f3e97901cdd68c18021fea
Author: Christian Hergert <chergert redhat com>
Date:   Mon May 2 17:37:24 2022 -0700

    plugins/clang: clear source upon destroy vfunc

 src/plugins/clang/ide-clang-highlighter.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/plugins/clang/ide-clang-highlighter.c b/src/plugins/clang/ide-clang-highlighter.c
index 4c4532845..f1d276aa7 100644
--- a/src/plugins/clang/ide-clang-highlighter.c
+++ b/src/plugins/clang/ide-clang-highlighter.c
@@ -283,6 +283,7 @@ ide_clang_highlighter_destroy (IdeObject *object)
 {
   IdeClangHighlighter *self = (IdeClangHighlighter *)object;
 
+  g_clear_handle_id (&self->queued_source, g_source_remove);
   g_clear_pointer (&self->index, ide_highlight_index_unref);
   g_clear_weak_pointer (&self->engine);