eglfs: Update screen destruction to follow the new approach

Call destroyScreen(), like other platform plugins do since
9b4fbe85d2e00c625c3d4abd975faf555000f685.

Change-Id: Idbddb026d7a964f15c00acfacf70064405dc3f16
Reviewed-by: Giulio Camuffo <giulio.camuffo@jollamobile.com>

src/plugins/platforms/eglfs/qeglfsdeviceintegration.cpp

@@ -40,9 +40,11 @@
 ****************************************************************************/
 
 #include "qeglfsdeviceintegration.h"
+#include "qeglfsintegration.h"
 #include <QtPlatformSupport/private/qeglconvenience_p.h>
 #include <QtPlatformSupport/private/qeglplatformcursor_p.h>
 #include <QGuiApplication>
+#include <private/qguiapplication_p.h>
 #include <QScreen>
 #include <QDir>
 #include <QRegularExpression>
@@ -185,8 +187,11 @@ void QEGLDeviceIntegration::screenInit()
 
 void QEGLDeviceIntegration::screenDestroy()
 {
-    while (!qApp->screens().isEmpty())
-        delete qApp->screens().last()->handle();
+    QGuiApplication *app = qGuiApp;
+    QEglFSIntegration *platformIntegration = static_cast<QEglFSIntegration *>(
+        QGuiApplicationPrivate::platformIntegration());
+    while (!app->screens().isEmpty())
+        platformIntegration->removeScreen(app->screens().last()->handle());
 }
 
 QSizeF QEGLDeviceIntegration::physicalScreenSize() const

src/plugins/platforms/eglfs/qeglfsintegration.cpp

@@ -82,6 +82,11 @@ void QEglFSIntegration::addScreen(QPlatformScreen *screen)
     screenAdded(screen);
 }
 
+void QEglFSIntegration::removeScreen(QPlatformScreen *screen)
+{
+    destroyScreen(screen);
+}
+
 void QEglFSIntegration::initialize()
 {
     qt_egl_device_integration()->platformInit();

src/plugins/platforms/eglfs/qeglfsintegration.h

@@ -47,6 +47,7 @@ public:
     QEglFSIntegration();
 
     void addScreen(QPlatformScreen *screen);
+    void removeScreen(QPlatformScreen *screen);
 
     void initialize() Q_DECL_OVERRIDE;
     void destroy() Q_DECL_OVERRIDE;