gcc 4.6 fixes

src/async.h

@@ -353,8 +353,10 @@ namespace Async {
                     chain_->exc = std::move(exc);
                     chain_->state = State::Rejected;
 
+                    auto core = chain_;
+
                     for (const auto& req: chain_->requests) {
-                        req->reject(chain_);
+                        req->reject(core);
                     }
                 });
             }

src/http.h

@@ -169,6 +169,22 @@ class ResponseStream : private Message {
 public:
     friend class Response;
 
+    ResponseStream(ResponseStream&& other)
+        : Message(std::move(other))
+        , peer_(std::move(other.peer_))
+        , buf_(std::move(other.buf_))
+        , io_(other.io_)
+    { }
+
+    ResponseStream& operator=(ResponseStream&& other) {
+        Message::operator=(std::move(other));
+        peer_ = std::move(other.peer_);
+        buf_ = std::move(other.buf_);
+        io_ = other.io_;
+
+        return *this;
+    }
+
     template<typename T>
     friend
     ResponseStream& operator<<(ResponseStream& stream, const T& val);