If we try to load an url with parameter, the extension was "xxx?param=xxx...".
Just added a split on '?' to get he true extension.
If we try to load an url with parameter, the extension was "xxx?param=xxx...".
Just added a split on '?' to get he true extension.

Conflicts:
	backends/native/openfl/display/LoaderInfo.hx
Merge pull request #271 from TBaudon/master

Loaderinfo error with url containing parameter