Critical errors when load scenes from AssetBundles

[n-shuvaev]

in Reporter.cs at 311 line:
sample.loadedScene = (byte)SceneManager.GetActiveScene().buildIndex;
If scene loaded from AssetBundle, buildIndex is equal -1, but (byte)-1 is equal 255.

Then at 92 line:

if ((int)loadedScene == -1)
	return "AssetBundleScene";

the condition is not met and every frame in console write critical error.

[aliessmael]

fixed