[gnome-builder] symbol-tree: add more task info

[Christian Hergert <chergert src gnome org>]

commit d8c4ee0f832f4b9f37eac5195703c63e90ac8908
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jan 9 17:45:53 2018 -0800

    symbol-tree: add more task info

 .../symbol-tree/gbp-symbol-layout-stack-addin.c    |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/plugins/symbol-tree/gbp-symbol-layout-stack-addin.c 
b/src/plugins/symbol-tree/gbp-symbol-layout-stack-addin.c
index d203cf5..5187dfa 100644
--- a/src/plugins/symbol-tree/gbp-symbol-layout-stack-addin.c
+++ b/src/plugins/symbol-tree/gbp-symbol-layout-stack-addin.c
@@ -306,6 +306,8 @@ gbp_symbol_layout_stack_addin_update_tree (GbpSymbolLayoutStackAddin *self,
   self->cancellable = g_cancellable_new ();
 
   task = g_task_new (self, self->cancellable, NULL, NULL);
+  g_task_set_source_tag (task, gbp_symbol_layout_stack_addin_update_tree);
+  g_task_set_priority (task, G_PRIORITY_LOW);
 
   data = g_slice_new0 (SymbolResolverTaskData);
   data->resolvers = g_ptr_array_new_with_free_func (g_object_unref);