Add missing includes for some of our _win.cpp files

Change-Id: I74067f5d50bea6fbc16576c26bf84f91e449e497
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

src/network/kernel/qnetworkproxy_win.cpp

@@ -47,6 +47,8 @@
 #include <qurl.h>
 #include <qnetworkinterface.h>
 #include <qdebug.h>
+#include <qvarlengtharray.h>
+#include <qhash.h>
 
 #include <string.h>
 #include <qt_windows.h>

src/network/socket/qnativesocketengine_win.cpp

@@ -52,6 +52,7 @@
 #include <qdatetime.h>
 #include <qnetworkinterface.h>
 #include <qoperatingsystemversion.h>
+#include <qvarlengtharray.h>
 
 #include <algorithm>