scripts/checksyscalls.sh: fix for non-gnu sed
Make the checksyscalls script work even on systems where sed is non-gnu.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
authored by Thomas Volpini and committed by Sam Ravnborg bd8f89ff 13797b77