gadgets: fix COMPOSE-SPACE method for PUSH-BUTTON-PANE
gadgets: fix COMPOSE-SPACE method for PUSH-BUTTON-PANE

df08d7b94faa4d7a868ecfe9ae629f8b62ad7ef6 seems to unintentionally have
moved the keyword arguments of the outer SPACE-REQUIREMENT+* call into
the inner call.

slyrus/mcclim,slyrus/mcclim