Return early with subdir_done() to reduce indentation in case the
v4l2_compat layer is not enabled. This matches our usual code patterns
in meson.build files, and prepares for enabling the v4l2_compat test
with ASan.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>