Use make_pair in place of std::pair.

libethereum/State.cpp

@@ -1189,7 +1189,7 @@ void State::execute(Address _myAddress, Address _txSender, u256 _txValue, u256s
 #ifdef __clang__
 			auto mFinder = tempMem.find(stack.back());
 			if (mFinder == tempMem.end())
-				tempMem.insert(std::pair<u256,u256>(stack.back(), stack[stack.size() - 2]));
+				tempMem.insert(make_pair(stack.back(), stack[stack.size() - 2]));
 			else
 				mFinder->second = stack[stack.size() - 2];
 #else

libethereum/State.h

@@ -275,7 +275,7 @@ inline std::ostream& operator<<(std::ostream& _out, State const& _s)
 #ifdef __clang__
 					auto mFinder = mem.find(j.first);
 					if (mFinder == mem.end())
-						mem.insert(std::pair<u256,u256>(j.first, RLP(j.second).toInt<u256>()));
+						mem.insert(std::make_pair(j.first, RLP(j.second).toInt<u256>()));
 					else
 						mFinder->second = RLP(j.second).toInt<u256>();
 #else
@@ -312,7 +312,7 @@ inline std::ostream& operator<<(std::ostream& _out, State const& _s)
 #ifdef __clang__
 						auto mFinder = mem.find(j.first);
 						if (mFinder == mem.end())
-							mem.insert(std::pair<u256,u256>(j.first, RLP(j.second).toInt<u256>()));
+							mem.insert(std::make_pair(j.first, RLP(j.second).toInt<u256>()));
 						else
 							mFinder->second = RLP(j.second).toInt<u256>();
 #else