SdkPersistentSettings: Fix build

Amends bb4d9c92e7

Change-Id: If20b80f30d87b1be8f606cab402c5a220fa68d07
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: David Schulz <david.schulz@qt.io>

src/tools/sdktool/addkitoperation.cpp

@@ -15,6 +15,7 @@
 
 #include "settings.h"
 
+#include <QDir>
 #include <QLoggingCategory>
 #include <QRegularExpression>
 

src/tools/sdktool/addqtoperation.cpp

@@ -15,6 +15,7 @@
 #include <QTest>
 #endif
 
+#include <QDir>
 #include <QLoggingCategory>
 #include <QRegularExpression>
 

src/tools/sdktool/sdkpersistentsettings.cpp

@@ -367,7 +367,7 @@ SdkFileSaver::SdkFileSaver(const QString &filePath, QIODevice::OpenMode mode)
 {
     m_filePath = filePath;
     // Workaround an assert in Qt -- and provide a useful error message, too:
-#if Q_OS_WIN
+#ifdef Q_OS_WIN
         // Taken from: https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx
         static const QStringList reservedNames
                 = {"CON", "PRN", "AUX", "NUL",