libqtile/lazy: fix and simplify LazyCall.check logic
libqtile/lazy: fix and simplify LazyCall.check logic

Signed-off-by: Etienne Wodey <897d7e7d4417d019c92e5f2c584fad3dfbb0a6c0@posteo.me>

qtile/qtile,ramnes/qtile,ramnes/qtile,qtile/qtile