http: Change boost::scoped_ptr to std::unique_ptr in HTTPRequest

No need for boost here.

src/httpserver.cpp

@@ -36,7 +36,6 @@
 
 #include <boost/algorithm/string/case_conv.hpp> // for to_lower()
 #include <boost/foreach.hpp>
-#include <boost/scoped_ptr.hpp>
 
 /** Maximum size of http request (request line + headers) */
 static const size_t MAX_HEADERS_SIZE = 8192;
@@ -54,7 +53,7 @@ public:
         func(req.get(), path);
     }
 
-    boost::scoped_ptr<HTTPRequest> req;
+    std::unique_ptr<HTTPRequest> req;
 
 private:
     std::string path;