Fix pannerAttr() not saving values on first call

Fixes goldfire#1497

Author: goldfire

src/plugins/howler.spatial.js

@@ -514,26 +514,28 @@
           panningModel: typeof o.panningModel !== 'undefined' ? o.panningModel : pa.panningModel
         };
 
-        // Update the panner values or create a new panner if none exists.
+        // Create a new panner node if one doesn't already exist.
         var panner = sound._panner;
-        if (panner) {
-          panner.coneInnerAngle = pa.coneInnerAngle;
-          panner.coneOuterAngle = pa.coneOuterAngle;
-          panner.coneOuterGain = pa.coneOuterGain;
-          panner.distanceModel = pa.distanceModel;
-          panner.maxDistance = pa.maxDistance;
-          panner.refDistance = pa.refDistance;
-          panner.rolloffFactor = pa.rolloffFactor;
-          panner.panningModel = pa.panningModel;
-        } else {
+        if (!panner) {
           // Make sure we have a position to setup the node with.
           if (!sound._pos) {
             sound._pos = self._pos || [0, 0, -0.5];
           }
 
           // Create a new panner node.
           setupPanner(sound, 'spatial');
+          panner = sound._panner
         }
+
+        // Update the panner values or create a new panner if none exists.
+        panner.coneInnerAngle = pa.coneInnerAngle;
+        panner.coneOuterAngle = pa.coneOuterAngle;
+        panner.coneOuterGain = pa.coneOuterGain;
+        panner.distanceModel = pa.distanceModel;
+        panner.maxDistance = pa.maxDistance;
+        panner.refDistance = pa.refDistance;
+        panner.rolloffFactor = pa.rolloffFactor;
+        panner.panningModel = pa.panningModel;
       }
     }