[gnome-builder] jsonrpc: pass additional ref to callback function

[Christian Hergert <chergert src gnome org>]

commit 0ddcb09ffd86ee44aab57cc9c4355a48dad78c7a
Author: Christian Hergert <chergert redhat com>
Date:   Mon Feb 20 15:40:52 2017 -0800

    jsonrpc: pass additional ref to callback function
    
    This isn't necessary, but it looks less suspicious when reading over the
    particular code.

 contrib/jsonrpc-glib/jsonrpc-client.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/contrib/jsonrpc-glib/jsonrpc-client.c b/contrib/jsonrpc-glib/jsonrpc-client.c
index 9456c10..9f38a7b 100644
--- a/contrib/jsonrpc-glib/jsonrpc-client.c
+++ b/contrib/jsonrpc-glib/jsonrpc-client.c
@@ -741,7 +741,7 @@ jsonrpc_client_call_sync_cb (GObject      *object,
                              gpointer      user_data)
 {
   JsonrpcClient *self = (JsonrpcClient *)object;
-  GTask *task = user_data;
+  g_autoptr(GTask) task = user_data;
   g_autoptr(JsonNode) return_value = NULL;
   g_autoptr(GError) error = NULL;
 
@@ -800,7 +800,7 @@ jsonrpc_client_call (JsonrpcClient  *self,
                              params,
                              cancellable,
                              jsonrpc_client_call_sync_cb,
-                             task);
+                             g_object_ref (task));
 
   while (!g_task_get_completed (task))
     g_main_context_iteration (main_context, TRUE);