[gnome-builder] code-index: reference build data when storing to queue

[Christian Hergert <chergert src gnome org>]

commit 879ed40a01982be30aa84f87c303fe3fff408603
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 18 06:37:20 2018 -0800

    code-index: reference build data when storing to queue

 src/plugins/code-index/ide-code-index-service.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/src/plugins/code-index/ide-code-index-service.c b/src/plugins/code-index/ide-code-index-service.c
index 9c5128551..a416d4684 100644
--- a/src/plugins/code-index/ide-code-index-service.c
+++ b/src/plugins/code-index/ide-code-index-service.c
@@ -88,6 +88,15 @@ build_data_unref (BuildData *data)
     }
 }
 
+static BuildData *
+build_data_ref (BuildData *data)
+{
+  g_assert (data != NULL);
+  g_assert (data->ref_count > 0);
+  g_atomic_int_inc (&data->ref_count);
+  return data;
+}
+
 G_DEFINE_AUTOPTR_CLEANUP_FUNC (BuildData, build_data_unref)
 
 static void
@@ -220,7 +229,6 @@ ide_code_index_service_build_cb (GObject      *object,
   else
     {
       unregister_pausable (self);
-      ide_code_index_builder_drop_caches (builder);
     }
 }
 
@@ -234,7 +242,7 @@ ide_code_index_serivce_push (BuildData *bdata)
 
   if (g_queue_is_empty (&bdata->self->build_queue))
     {
-      g_queue_push_tail (&bdata->self->build_queue, bdata);
+      g_queue_push_tail (&bdata->self->build_queue, build_data_ref (bdata));
 
       g_clear_object (&bdata->self->cancellable);
       bdata->self->cancellable = g_cancellable_new ();
@@ -250,7 +258,7 @@ ide_code_index_serivce_push (BuildData *bdata)
     }
   else
     {
-      g_queue_push_tail (&bdata->self->build_queue, bdata);
+      g_queue_push_tail (&bdata->self->build_queue, build_data_ref (bdata));
     }
 
   if (bdata->self->build_dirs != NULL)