initialize some uninitialized vars - closes #5974

gtk2_ardour/meterbridge.cc

@@ -392,7 +392,7 @@ Meterbridge::on_scroll()
 	ARDOUR::MeterType mt_right = _mt_right;
 
 	for (unsigned int i = 0; i < _metrics.size(); ++i) {
-		int sx, dx, dy;
+		int sx, dx = 0, dy = 0;
 		int mm = _metrics[i]->get_metric_mode();
 		sx = (mm & 2) ? _metrics[i]->get_width() : 0;
 

gtk2_ardour/processor_box.cc

@@ -103,6 +103,7 @@ static const uint32_t midi_port_color = 0x960909FF; //Red
 ProcessorEntry::ProcessorEntry (ProcessorBox* parent, boost::shared_ptr<Processor> p, Width w)
 	: _button (ArdourButton::led_default_elements)
 	, _position (PreFader)
+	, _position_num(0)
 	, _selectable(true)
 	, _parent (parent)
 	, _processor (p)

libs/ardour/audioengine.cc

@@ -81,6 +81,7 @@ AudioEngine::AudioEngine ()
 	, _latency_flush_frames (0)
 	, _latency_signal_latency (0)
 	, _stopped_for_latency (false)
+	, _started_for_latency (false)
 	, _in_destructor (false)
     , _hw_reset_event_thread(0)
     , _hw_reset_request_count(0)