message: reorder defined checks according to cmake file
diff: @@ -630,9 +630,8 @@ int cv::waitKey(int delay)
  return (code != -1) ? (code & 0xff) : -1;
  }
  -#if defined(HAVE_WIN32UI)
  -// pollKey() implemented in window_w32.cpp
  -#elif defined(HAVE_GTK) || defined(HAVE_COCOA) || defined(HAVE_QT) || (defined (WINRT) && !defined (WINRT_8_0))
  +#if defined(HAVE_QT) || (defined (WINRT) && !defined (WINRT_8_0)) || \
  + !defined(HAVE_WIN32UI) && (defined(HAVE_GTK) || defined(HAVE_COCOA))
  // pollKey() fallback implementation
  int cv::pollKey()
  {
  @@ -650,6 +649,8 @@ int cv::pollKey()
  // fallback. please implement a proper polling function
  return cvWaitKey(1);
  }
  +#elif defined(HAVE_WIN32UI)
  +// pollKey() implemented in window_w32.cpp
  #endif
  int cv::createTrackbar(const String& trackbarName, const String& winName,
  