[gnome-builder] libide: fix double free of error structure

[Christian Hergert <chergert src gnome org>]

commit 2f429d6d64d7fcd094b54b196927ae4d881653bc
Author: Christian Hergert <christian hergert me>
Date:   Mon Mar 2 23:34:54 2015 -0800

    libide: fix double free of error structure

 libide/ide-diagnostician.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libide/ide-diagnostician.c b/libide/ide-diagnostician.c
index d5c8014..6e5d447 100644
--- a/libide/ide-diagnostician.c
+++ b/libide/ide-diagnostician.c
@@ -103,7 +103,7 @@ diagnose_cb (GObject      *object,
 
 maybe_complete:
   if (state->total == 1 && error)
-    g_task_return_error (task, error);
+    g_task_return_error (task, g_error_copy (error));
   else if (!state->active)
     g_task_return_pointer (task,
                            ide_diagnostics_ref (state->diagnostics),