Backport a commit from util-linux upstream to fix the following error.
agetty: segfault at 0 ip 00007fc65600295c sp 00007fffa8dd67e8 error 4 in libc.so.6
(From OE-Core rev: e9cfc549091b77d08817eb7235076c7a0c20e4fa)
Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>