fix compile error

src/tcpbuffer.h

@@ -73,6 +73,26 @@ public:
         that._size = 0;
     }
     
+    /**
+     *  Move assignment operator
+     *  @param  that
+     */
+    TcpBuffer &operator=(TcpBuffer &&that)
+    {
+        // skip self-assignment
+        if (this == &that) return *this;
+        
+        // swap buffers
+        _buffers.swap(that._buffers);
+        
+        // swap integers
+        std::swap(_skip, that._skip);
+        std::swap(_size, that._size);
+        
+        // done
+        return *this;
+    }
+    
     /**
      *  Does the buffer exist (is it non-empty)
      *  @return bool

src/tcpconnected.h

@@ -139,7 +139,7 @@ public:
                 buffer.shrink(processed);
                 
                 // restore the buffer as member
-                _in = std::move(buffer);
+                std::swap(_in, buffer);
             }
         }