Inline make_if macro

Author: camsteffen

compiler/rustc_ast_lowering/src/expr.rs

@@ -442,18 +442,10 @@ impl<'hir> LoweringContext<'_, 'hir> {
  then: &Block,
  else_opt: Option<&Expr>,
  ) -> hir::ExprKind<'hir> {
- macro_rules! make_if {
- ($opt:expr) => {{
- let cond = self.lower_expr(cond);
- let then_expr = self.lower_block_expr(then);
- hir::ExprKind::If(cond, self.arena.alloc(then_expr), $opt)
- }};
- }
- if let Some(rslt) = else_opt {
- make_if!(Some(self.lower_expr(rslt)))
- } else {
- make_if!(None)
- }
+ let cond = self.lower_expr(cond);
+ let then = self.arena.alloc(self.lower_block_expr(then));
+ let els = else_opt.map(|els| self.lower_expr(els));
+ hir::ExprKind::If(cond, then, els)
  }
 
  fn lower_expr_if_let(