QNX: Print the buffer size before crashing, for debug purposes.

Change-Id: I2d423ee3717bb09b7bb2c63f645e5315be1fa611
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

src/plugins/platforms/qnx/qqnxwindow.cpp

@@ -362,6 +362,7 @@ void QQnxWindow::setBufferSize(const QSize &size)
         errno = 0;
         result = screen_create_window_buffers(m_window, MAX_BUFFER_COUNT);
         if (result != 0) {
+            qWarning() << "QQnxWindow: Buffer size was" << size;
             qFatal("QQnxWindow: failed to create window buffers, errno=%d", errno);
         }