The surface of the focus_view may be a subsurface. So get the corresponding main
surface first.
Without this get_ivi_shell_surface(), will cast committed_private (which is a
weston_subsurface object) to ivi_shell_surface. Weston crashes shortly
afterwards.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
141943eb76