Fixed compile of Qt/Embedded.

Fixes compile error:
  kernel/qapplication_qws.cpp: In static member function 'static bool QApplicationPrivate::qws_apply_settings()':
  kernel/qapplication_qws.cpp:2014: error: no match for 'operator!' in '!QApplicationPrivate::styleOverride'
  kernel/qapplication_qws.cpp:2014: note: candidates are: operator!(bool) <built-in>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/gui/kernel/qapplication_qws.cpp b/src/gui/kernel/qapplication_qws.cpp
index ea52e11dec..edae670521 100644
--- a/src/gui/kernel/qapplication_qws.cpp
+++ b/src/gui/kernel/qapplication_qws.cpp
@@ -2011,8 +2011,8 @@ bool QApplicationPrivate::qws_apply_settings()
     // read new QStyle
     QString stylename = settings.value(QLatin1String("style")).toString();
     if (QCoreApplication::startingUp()) {
-        if (!stylename.isEmpty() && !QApplicationPrivate::styleOverride)
-            QApplicationPrivate::styleOverride = new QString(stylename);
+        if (!stylename.isEmpty() && QApplicationPrivate::styleOverride.isNull())
+            QApplicationPrivate::styleOverride = stylename;
     } else {
         QApplication::setStyle(stylename);
     }