Fix compilation on windows.

Change-Id: I0738581babd73512501cea7f24cba573d45efbae
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/debugger/debuggeroptionspage.cpp

@@ -37,6 +37,7 @@
 #include <utils/detailswidget.h>
 #include <utils/pathchooser.h>
 #include <utils/qtcassert.h>
+#include <utils/winutils.h>
 
 #include <QFormLayout>
 #include <QHeaderView>