WinGui: fix an issue where the value of the H.264 level and profile widgets was used even though the advanced panel was enabled (and thus the widgets were disabled and not settable by the user).



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5871 b64f7644-9d1e-0410-96f1-a4d463321fa5