Merge pull request goldfire#1225 from themoonrat/fix-looping-audio

Fixed audio not looping occasionally

Author: goldfire

src/howler.core.js

@@ -796,7 +796,6 @@
       var timeout = (duration * 1000) / Math.abs(sound._rate);
       var start = self._sprite[sprite][0] / 1000;
       var stop = (self._sprite[sprite][0] + self._sprite[sprite][1]) / 1000;
-      var loop = !!(sound._loop || self._sprite[sprite][2]);
       sound._sprite = sprite;
 
       // Mark the sound as ended instantly so that this async playback
@@ -809,7 +808,7 @@
         sound._seek = seek;
         sound._start = start;
         sound._stop = stop;
-        sound._loop = loop;
+        sound._loop = !!(sound._loop || self._sprite[sprite][2]);
       };
 
       // End the sound instantly if seek is at the end.