Store the speaker angles in the device

Alc/panning.c

@@ -166,14 +166,15 @@ ALint aluCart2LUTpos(ALfloat re, ALfloat im)
 
 ALvoid aluInitPanning(ALCdevice *Device)
 {
-    ALfloat SpeakerAngle[MAXCHANNELS];
     const char *layoutname = NULL;
     enum Channel *Speaker2Chan;
+    ALfloat *SpeakerAngle;
     ALfloat Alpha, Theta;
     ALint pos;
     ALuint s;
 
     Speaker2Chan = Device->Speaker2Chan;
+    SpeakerAngle = Device->SpeakerAngle;
     switch(Device->FmtChans)
     {
         case DevFmtMono:

OpenAL32/Include/alMain.h

@@ -578,6 +578,7 @@ struct ALCdevice_struct
     enum Channel DevChannels[MAXCHANNELS];
 
     enum Channel Speaker2Chan[MAXCHANNELS];
+    ALfloat SpeakerAngle[MAXCHANNELS];
     ALfloat PanningLUT[LUT_NUM][MAXCHANNELS];
     ALuint  NumChan;