Switch to using options to detect preload settings

Before the Flash runtime is available, player.preload() returns undefined. Switch to player.options().preload to find out what the "desired" setting is, instead of the current value.

@@ -45,6 +45,6 @@
   "dependencies": {
     "pkcs7": "^0.2.2",
     "videojs-contrib-media-sources": "^1.0.0",
-    "videojs-swf": "^4.6.0"
+    "videojs-swf": "^4.7.0"
   }
 }

@@ -556,7 +556,8 @@ videojs.Hls.prototype.fillBuffer = function(offset) {
     segmentUri;
 
   // if preload is set to "none", do not download segments until playback is requested
-  if (!player.hasClass('vjs-has-started') && player.preload() === "none") {
+  if (!player.hasClass('vjs-has-started') &&
+      player.options().preload === 'none') {
     return;
   }