Fix incomplete type compile error with Qt4

src/base/http/server.cpp

@@ -28,14 +28,18 @@
  * exception statement from your version.
  */
 
+#include "server.h"
+
+#include <QNetworkProxy>
+#include <QStringList>
+
 #ifndef QT_NO_OPENSSL
 #include <QSslSocket>
 #else
 #include <QTcpSocket>
 #endif
-#include <QNetworkProxy>
+
 #include "connection.h"
-#include "server.h"
 
 using namespace Http;