[gnome-builder/wip/gtk4-port] plugins/omni-gutter: add note about symbolics

[Christian Hergert <chergert src gnome org>]

commit 6deff696f850cff0948ce47c6fec38a569cedcc5
Author: Christian Hergert <chergert redhat com>
Date:   Thu May 26 14:56:17 2022 -0700

    plugins/omni-gutter: add note about symbolics
    
    We still need to do this so leave a note about it for later.

 src/plugins/omni-gutter/gbp-omni-gutter-renderer.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c 
b/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
index 10eb69750..359797b11 100644
--- a/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
+++ b/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
@@ -1252,6 +1252,9 @@ draw_diagnostic (GbpOmniGutterRenderer *self,
                               &GRAPHENE_POINT_INIT (2,
                                                     line_y + ((height - self->diag_size) / 2)));
       gdk_paintable_snapshot (paintable, GDK_SNAPSHOT (snapshot), self->diag_size, self->diag_size);
+#if 0
+      gtk_symbolic_paintable_snapshot_symbolic (GTK_SYMBOLIC_PAINTABLE (paintable), snapshot, 
self->diag_size, self->diag_size,  colors, n_colors);
+#endif
       gtk_snapshot_restore (snapshot);
     }
 }