QmlJS: Fix up compile fix

Amends 33b091bd40.

Change-Id: I26d98bae8a074f7c3515b46994afd5548e2ca82f
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

src/libs/qmljs/parser/qmljslexer.cpp

@@ -35,11 +35,12 @@
 #include <QtCore/qdebug.h>
 #include <QtCore/QScopedValueRollback>
 
-QT_QML_BEGIN_NAMESPACE
 QT_BEGIN_NAMESPACE
 Q_CORE_EXPORT double qstrtod(const char *s00, char const **se, bool *ok);
 QT_END_NAMESPACE
 
+QT_QML_BEGIN_NAMESPACE
+
 using namespace QmlJS;
 
 static inline int regExpFlagFromChar(const QChar &ch)