[gnome-builder/wip/gtk4-port] plugins/omni-gutter: fix tag name

[Christian Hergert <chergert src gnome org>]

commit 78eb462c3a31e9d1d4e1dfad113f21ba8d2b0baa
Author: Christian Hergert <chergert redhat com>
Date:   Wed Apr 27 16:43:44 2022 -0700

    plugins/omni-gutter: fix tag name

 src/plugins/omni-gutter/gbp-omni-gutter-renderer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c 
b/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
index 84bc62c04..da4de45b8 100644
--- a/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
+++ b/src/plugins/omni-gutter/gbp-omni-gutter-renderer.c
@@ -854,7 +854,7 @@ gbp_omni_gutter_renderer_begin (GtkSourceGutterRenderer *renderer,
   gtk_text_buffer_get_iter_at_line (buffer, &begin, self->begin_line);
   gtk_text_buffer_get_iter_at_line (buffer, &end, end_line);
   table = gtk_text_buffer_get_tag_table (buffer);
-  tag = gtk_text_tag_table_lookup (table, "debugger::current-breakpoint");
+  tag = gtk_text_tag_table_lookup (table, "-Builder:current-breakpoint");
   if (tag != NULL)
     {
       bkpt = begin;