From 88a4ed9cd72c7901b025dd8c8d86c69cfc6b157f Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Fri, 13 Jan 2017 13:33:22 -0800
Subject: [PATCH] Include missing_field in impl MapVisitor for &mut MapVisitor

---
 serde/src/de/mod.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/serde/src/de/mod.rs b/serde/src/de/mod.rs
index c0633b0e..c4bb1fc0 100644
--- a/serde/src/de/mod.rs
+++ b/serde/src/de/mod.rs
@@ -751,6 +751,13 @@ impl<'a, V_> MapVisitor for &'a mut V_ where V_: MapVisitor {
     fn size_hint(&self) -> (usize, Option<usize>) {
         (**self).size_hint()
     }
+
+    #[inline]
+    fn missing_field<V>(&mut self, field: &'static str) -> Result<V, Self::Error>
+        where V: Deserialize
+    {
+        (**self).missing_field(field)
+    }
 }
 
 ///////////////////////////////////////////////////////////////////////////////