From d939bc5137266288eea7f47d4c5be47182817014 Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Wed, 8 Nov 2017 10:40:58 -0800
Subject: [PATCH] Use is_empty() instead of comparing len() with 0.

---
 lib/cretonne/src/verifier/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/cretonne/src/verifier/mod.rs b/lib/cretonne/src/verifier/mod.rs
index c2753d1335..7d2338c821 100644
--- a/lib/cretonne/src/verifier/mod.rs
+++ b/lib/cretonne/src/verifier/mod.rs
@@ -991,7 +991,7 @@ impl<'a> Verifier<'a> {
                     self.func.dfg.ctrl_typevar(inst),
                 )
                 {
-                    if possible_encodings.len() != 0 {
+                    if !possible_encodings.is_empty() {
                         possible_encodings.push_str(", ");
                         multiple_encodings = true;
                     }