Various minor Idx-related tweaks

Nothing particularly exciting here, but a couple of things I noticed as I was looking for more index conversions to simplify.

1 files changed, 1 insertions, 2 deletions

diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs
index dd86977817f..a0a8246be15 100644
--- a/compiler/rustc_codegen_ssa/src/mir/block.rs
+++ b/compiler/rustc_codegen_ssa/src/mir/block.rs
@@ -12,7 +12,6 @@ use crate::MemFlags;
 use rustc_ast as ast;
 use rustc_ast::{InlineAsmOptions, InlineAsmTemplatePiece};
 use rustc_hir::lang_items::LangItem;
-use rustc_index::vec::Idx;
 use rustc_middle::mir::{self, AssertKind, SwitchTargets};
 use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, ValidityRequirement};
 use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
@@ -369,7 +368,7 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> {
         if self.fn_abi.c_variadic {
             // The `VaList` "spoofed" argument is just after all the real arguments.
             let va_list_arg_idx = self.fn_abi.args.len();
-            match self.locals[mir::Local::new(1 + va_list_arg_idx)] {
+            match self.locals[mir::Local::from_usize(1 + va_list_arg_idx)] {
                 LocalRef::Place(va_list) => {
                     bx.va_end(va_list.llval);
                 }