HRTFDatabaseLoader is not an absolute condition to run audioContext

Source/modules/webaudio/PannerNode.h

Index: Source/modules/webaudio/PannerNode.h
diff --git a/Source/modules/webaudio/PannerNode.h b/Source/modules/webaudio/PannerNode.h
index 68fc1d539278b2dbcaf892ad2ccf59efbcf00279..fa2573cf1835a66696afd222309a0643fe9a0ebc 100644
--- a/Source/modules/webaudio/PannerNode.h
+++ b/Source/modules/webaudio/PannerNode.h
@@ -28,6 +28,7 @@
 #include "platform/audio/AudioBus.h"
 #include "platform/audio/Cone.h"
 #include "platform/audio/Distance.h"
+#include "platform/audio/HRTFDatabaseLoader.h"
 #include "platform/audio/Panner.h"
 #include "modules/webaudio/AudioListener.h"
 #include "modules/webaudio/AudioNode.h"
@@ -146,6 +147,9 @@ private:
     ConeEffect m_coneEffect;
     float m_lastGain;
 
+    // HRTF Database loader
+    RefPtr<HRTFDatabaseLoader> m_hrtfDatabaseLoader;
+
     unsigned m_connectionCount;
 
     // Synchronize process() and setPanningModel() which can change the panner.