task = g_task_new (volume, cancellable, callback, user_data);
if (g_task_return_error_if_cancelled (task))
- return;
+ {
+ g_object_unref (task);
+ return;
+ }
subprocess = g_subprocess_newv (argv, G_SUBPROCESS_FLAGS_STDOUT_SILENCE | G_SUBPROCESS_FLAGS_STDERR_PIPE, &error);
g_assert_no_error (error);