From 659ba09b2d9dfe1c9ae50d86ab87fc9acb55a03e Mon Sep 17 00:00:00 2001
From: Aaron Turon <aturon@mozilla.com>
Date: Mon, 7 Dec 2015 16:59:26 -0800
Subject: [PATCH] Remove useless vector accumulation in `type_vars_for_defs`

---
 src/librustc/middle/infer/mod.rs | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/librustc/middle/infer/mod.rs b/src/librustc/middle/infer/mod.rs
index e671dd73431e..e08167e7ce68 100644
--- a/src/librustc/middle/infer/mod.rs
+++ b/src/librustc/middle/infer/mod.rs
@@ -1025,8 +1025,6 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
                               substs: &mut Substs<'tcx>,
                               defs: &[ty::TypeParameterDef<'tcx>]) {
 
-        let mut vars = Vec::with_capacity(defs.len());
-
         for def in defs.iter() {
             let default = def.default.map(|default| {
                 type_variable::Default {
@@ -1038,7 +1036,6 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
 
             let ty_var = self.next_ty_var_with_default(default);
             substs.types.push(space, ty_var);
-            vars.push(ty_var)
         }
     }