Fixes build warnings when using newer versions of grep.
Signed-off-by: Chris Osgood <chris_github@functionalfuture.com>
Tested-by: Georgi Valkov <gvalkov@gmail.com>
(cherry picked from commit c5e167e0d6)
[ fix conflict error ]
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>