From b9b5a3215488bae306555b69ef38e9867aa9e9c2 Mon Sep 17 00:00:00 2001
From: Ivan Enderlin <ivan.enderlin@hoa-project.net>
Date: Fri, 3 Apr 2020 16:22:26 +0200
Subject: [PATCH] feat(interface-types) Simplify
 `FlattenInterfaceValueIterator` with `last_mut`.

---
 src/interpreter/wasm/values.rs | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/src/interpreter/wasm/values.rs b/src/interpreter/wasm/values.rs
index 66a3d8d..4e93a3b 100644
--- a/src/interpreter/wasm/values.rs
+++ b/src/interpreter/wasm/values.rs
@@ -156,13 +156,7 @@ impl<'a> Iterator for FlattenInterfaceValueIterator<'a> {
     type Item = &'a InterfaceValue;
 
     fn next(&mut self) -> Option<Self::Item> {
-        if self.iterators.is_empty() {
-            return None;
-        }
-
-        let index = self.iterators.len() - 1;
-
-        match self.iterators[index].next() {
+        match self.iterators.last_mut()?.next() {
             // End of the current iterator, go back to the previous
             // one.
             None => {