From 4ccd21ba94148505b2d64e99675a7703b535f938 Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Wed, 30 Aug 2017 11:21:02 -0700
Subject: [PATCH] Simplify iteration.

---
 lib/frontend/src/ssa.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/frontend/src/ssa.rs b/lib/frontend/src/ssa.rs
index f4b73c280a..01baf27e2e 100644
--- a/lib/frontend/src/ssa.rs
+++ b/lib/frontend/src/ssa.rs
@@ -397,7 +397,7 @@ impl<Variable> SSABuilder<Variable>
         };
         // For each undef var we look up values in the predecessors and create an Ebb argument
         // only if necessary.
-        for &(var, val) in &undef_vars {
+        for (var, val) in undef_vars {
             let (_, mut local_side_effects) =
                 self.predecessors_lookup(dfg, layout, jts, val, var, ebb, &predecessors);
             side_effects