From 7f285cc42990e34bd8a489519aaae216a93584cf Mon Sep 17 00:00:00 2001
From: Stepan Koltsov <stepan.koltsov@gmail.com>
Date: Sun, 19 May 2019 23:12:57 +0100
Subject: [PATCH] Fix UnknownFields hash

(Previously always returned 0)
---
 protobuf/src/unknown.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/protobuf/src/unknown.rs b/protobuf/src/unknown.rs
index 85b1a6c43..2f215b25e 100644
--- a/protobuf/src/unknown.rs
+++ b/protobuf/src/unknown.rs
@@ -149,7 +149,7 @@ impl Hash for UnknownFields {
                 for (k, v) in &**map {
                     let mut entry_hasher = DefaultHasher::new();
                     Hash::hash(&(k, v), &mut entry_hasher);
-                    hash.wrapping_add(entry_hasher.finish());
+                    hash = hash.wrapping_add(entry_hasher.finish());
                 }
                 Hash::hash(&hash, state);
             }