[gnome-builder] ctags: ensure task is setup up before we can fail

[Christian Hergert <chergert src gnome org>]

commit 2d992da877187ca26db8ca1c2ada3195b2427204
Author: Christian Hergert <chergert redhat com>
Date:   Thu Oct 20 12:06:58 2016 -0700

    ctags: ensure task is setup up before we can fail
    
    We were waiting to prepare the task until the final stage, and that is
    clearly wrong here. We need it in place so we can short circuit.

 plugins/ctags/ide-ctags-symbol-resolver.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/plugins/ctags/ide-ctags-symbol-resolver.c b/plugins/ctags/ide-ctags-symbol-resolver.c
index 0f95196..d7e5c82 100644
--- a/plugins/ctags/ide-ctags-symbol-resolver.c
+++ b/plugins/ctags/ide-ctags-symbol-resolver.c
@@ -632,6 +632,9 @@ ide_ctags_symbol_resolver_get_symbol_tree_async (IdeSymbolResolver   *resolver,
   g_assert (G_IS_FILE (file));
   g_assert (!cancellable || G_IS_CANCELLABLE (cancellable));
 
+  task = g_task_new (self, cancellable, callback, user_data);
+  g_task_set_source_tag (task, ide_ctags_symbol_resolver_get_symbol_tree_async);
+
   context = ide_object_get_context (IDE_OBJECT (self));
   service = ide_context_get_service_typed (context, IDE_TYPE_CTAGS_SERVICE);
   indexes = ide_ctags_service_get_indexes (service);
@@ -661,9 +664,7 @@ ide_ctags_symbol_resolver_get_symbol_tree_async (IdeSymbolResolver   *resolver,
       g_ptr_array_add (state->indexes, g_object_ref (index));
     }
 
-  task = g_task_new (self, cancellable, callback, user_data);
   g_task_set_task_data (task, state, tree_resolver_state_free);
-  g_task_set_source_tag (task, ide_ctags_symbol_resolver_get_symbol_tree_async);
   g_task_run_in_thread (task, ide_ctags_symbol_resolver_get_symbol_tree_worker);
 
   IDE_EXIT;