cmGrPlotAudio.c : The audio plot object no longer uses the underlying

graphic objects 'user' pointer.  This was a bug because the user of the
audio object itself might use this pointer thereby overwrite the pointer
set internally by the audio object.

cmGrPlotAudio.c

@@ -178,7 +178,7 @@ cmGrPlRC_t  cmGrPlotAudioFileObjCreate(
   op->isInsideCbArg  = cmGrObjIsInsideCbArg(grObjH);
   cmGrObjSetIsInsideCb( grObjH, _cmGrPlObjAfIsInside, op );
 
-  cmGrPlotObjSetUserPtr(oH,op);
+  //cmGrPlotObjSetUserPtr(oH,op);
 
   return kOkGrPlRC;
 }