Don't try to call a function on a null PulseAudio context. If pa_context_new() fails, we now try again to connect to the pulse audio daemon later. Task-number: QTBUG-35456 Change-Id: I0b848d3f25f57651ab31b9eca7ceb1bc9df2f682 Reviewed-by: Christian Stromme <christian.stromme@digia.com>