From 99a03b21ce01c7f8414dfcdce189be74fd2495be Mon Sep 17 00:00:00 2001
From: Kp <kp@valhallalegends.com>
Date: Sun, 17 May 2020 23:35:25 +0000
Subject: [PATCH] Simplify serial:process_buffer self-selection filter

Use std::enable_if, so that the second argument becomes part of the
parameter pack instead of requiring explicit handling.
---
 common/include/serial.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/common/include/serial.h b/common/include/serial.h
index c9f0b1ef1..771d39697 100644
--- a/common/include/serial.h
+++ b/common/include/serial.h
@@ -743,12 +743,12 @@ static void process_buffer(Accessor &&accessor, const message<A1, Args...> &m)
 }
 
 /* Require at least two arguments to prevent self-selection */
-template <typename Accessor, typename A1, typename A2, typename... An>
-static void process_buffer(Accessor &&accessor, A1 &&a1, A2 &&a2, An &&... an)
+template <typename Accessor, typename A1, typename... An>
+static typename std::enable_if<(sizeof...(An) > 0)>::type process_buffer(Accessor &&accessor, A1 &&a1, An &&... an)
 {
 	detail::sequence({
 		(process_buffer(accessor, std::forward<A1>(a1)),
-		 process_buffer(accessor, std::forward<A2>(a2)), static_cast<uint8_t>(0)),
+		 static_cast<uint8_t>(0)),
 		(process_buffer(accessor, std::forward<An>(an)), static_cast<uint8_t>(0))...
 	});
 }