if let ast::StmtKind::Expr(ref expr) = block.stmts[0].kind {
if let ast::ExprKind::Block(..) = expr.kind {
flatten_arm_body(context, expr, None)
if let ast::StmtKind::Expr(ref expr) = block.stmts[0].kind {
if let ast::ExprKind::Block(..) = expr.kind {
flatten_arm_body(context, expr, None)