From e1478359e6b94acfa5274f8fcdfa55d65f3b9ed8 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Sat, 22 Oct 2016 20:05:19 +0300
Subject: [PATCH] Fixed build in Xcode.

---
 Telegram/SourceFiles/ui/animation.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Telegram/SourceFiles/ui/animation.h b/Telegram/SourceFiles/ui/animation.h
index 97d4f58a6..8e8657815 100644
--- a/Telegram/SourceFiles/ui/animation.h
+++ b/Telegram/SourceFiles/ui/animation.h
@@ -533,7 +533,8 @@ public:
 
 private:
 	struct Data {
-		Data(const ValueType &from, Callback &&updateCallback)
+		template <typename Lambda, typename = std_::enable_if_t<std_::is_rvalue_reference<Lambda&&>::value>>
+		Data(const ValueType &from, Lambda &&updateCallback)
 			: value(from, from)
 			, a_animation(animation(this, &Data::step))
 			, updateCallback(std_::move(updateCallback)) {