Revert "fixed compile error under linux"
Revert "fixed compile error under linux"

This reverts commit e2d9fc4dcc9d4f9bc3daefdaaa55e36e34fac7af.

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