From 33b5b36f44e51e9a7a3061991ff950ae4f839e76 Mon Sep 17 00:00:00 2001
From: adria0 <adria@codecontext.io>
Date: Wed, 29 Jul 2020 11:34:06 +0200
Subject: [PATCH] Fix warnings: single tuples

---
 ethcore/src/tx_filter.rs                  | 2 +-
 ethcore/sync/src/light_sync/sync_round.rs | 2 +-
 util/EIP-712/src/encode.rs                | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/ethcore/src/tx_filter.rs b/ethcore/src/tx_filter.rs
index 1e3c45ec4..09e16c06a 100644
--- a/ethcore/src/tx_filter.rs
+++ b/ethcore/src/tx_filter.rs
@@ -52,7 +52,7 @@ pub struct TransactionFilter {
     contract_address: Address,
     transition_block: BlockNumber,
     permission_cache: Mutex<LruCache<(H256, Address), u32>>,
-    contract_version_cache: Mutex<LruCache<(H256), Option<U256>>>,
+    contract_version_cache: Mutex<LruCache<H256, Option<U256>>>,
 }
 
 impl TransactionFilter {
diff --git a/ethcore/sync/src/light_sync/sync_round.rs b/ethcore/sync/src/light_sync/sync_round.rs
index a099aba7a..b8bc61773 100644
--- a/ethcore/sync/src/light_sync/sync_round.rs
+++ b/ethcore/sync/src/light_sync/sync_round.rs
@@ -251,7 +251,7 @@ impl Fetcher {
                 }
 
                 // state transition not triggered until drain is finished.
-                (SyncRound::Fetch(self))
+                SyncRound::Fetch(self)
             }
         }
     }
diff --git a/util/EIP-712/src/encode.rs b/util/EIP-712/src/encode.rs
index 6a52db303..59d4033b3 100644
--- a/util/EIP-712/src/encode.rs
+++ b/util/EIP-712/src/encode.rs
@@ -45,7 +45,7 @@ fn check_hex(string: &str) -> Result<()> {
 fn build_dependencies<'a>(
     message_type: &'a str,
     message_types: &'a MessageTypes,
-) -> Option<(HashSet<&'a str>)> {
+) -> Option<HashSet<&'a str>> {
     if message_types.get(message_type).is_none() {
         return None;
     }