http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=2a045bc38f853c02f682c710b8d69bd465719b26
So, after grep syncs to the latest gnulib, this patch should be reverted.
By the way, I verified that this patch is not needed if grep updates to
the latest version of gnulib, because of this gnulib fix:
- bug#17506: [PATCH] grep: port mb_next_wc to RHEL 6.5 x86-64 Paul Eggert
- bug#17506: [PATCH] grep: port mb_next_wc to RHEL 6.5 x86... Paul Eggert
