fix maximize -> fullscreen -> maximize on Windows

Using a reference changes the value of oldState within this function,
which is undesired.

Change-Id: I9fb66e488015d6b3e586ffa2f0b05a40c095e16b
Reviewed-by: Christian Kamm <christian.d.kamm@nokia.com>

diff --git a/src/plugins/platforms/windows/qwindowswindow.cpp b/src/plugins/platforms/windows/qwindowswindow.cpp
index 1c76ff4..6e0d9b5 100644 (file)
--- a/src/plugins/platforms/windows/qwindowswindow.cpp
+++ b/src/plugins/platforms/windows/qwindowswindow.cpp
@@ -1203,7 +1203,7 @@ bool QWindowsWindow::isFullScreen_sys() const
 
 void QWindowsWindow::setWindowState_sys(Qt::WindowState newState)
 {
-    const Qt::WindowState &oldState = m_windowState;
+    const Qt::WindowState oldState = m_windowState;
     if (oldState == newState)
         return;
     if (QWindowsContext::verboseWindows)