Unnecessary closure in rustc_mir/build/mod.rs

[bjorn3]

Itunsupported is only called on line 53:

rust/src/librustc_mir/build/mod.rs

Lines 40 to 53 in a05f82f

	let unsupported = || {
	span_bug!(tcx.hir.span(id), "can't build MIR for {:?}", def_id);
	};
	// Figure out what primary body this item has.
	let body_id = match tcx.hir.get(id) {
	hir::map::NodeVariant(variant) =>
	return create_constructor_shim(tcx, id, &variant.node.data),
	hir::map::NodeStructCtor(ctor) =>
	return create_constructor_shim(tcx, id, ctor),
	_ => match tcx.hir.maybe_body_owned_by(id) {
	Some(body) => body,
	None => unsupported(),