fix gcc C++11 bug mentioned in http://answers.opencv.org/question/283 . Bug also fixed in FLANN upstream
fix gcc C++11 bug mentioned in http://answers.opencv.org/question/283 . Bug also fixed in FLANN upstream

opencv/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,apavlenko/opencv,opencv/opencv