Qt: Fix audio sliders not applying correctly

src/core/system.cpp

@@ -1233,6 +1233,11 @@ void RunFrame()
   g_gpu->ResetGraphicsAPIState();
 }
 
+float GetTargetSpeed()
+{
+  return s_target_speed;
+}
+
 void SetTargetSpeed(float speed)
 {
   s_target_speed = speed;

src/core/system.h

@@ -149,6 +149,7 @@ void SingleStepCPU();
 void RunFrame();
 
 /// Sets target emulation speed.
+float GetTargetSpeed();
 void SetTargetSpeed(float speed);
 
 /// Adjusts the throttle frequency, i.e. how many times we should sleep per second.