elfutils: Backport fix for CVE-2021-33294

Upstream-Status: Backport from https://sourceware.org/git/?p=elfutils.git;a=commit;h=480b6fa3662ba8ffeee274bf0d37423413c01e55

Reference
https://nvd.nist.gov/vuln/detail/CVE-2021-33294
https://sourceware.org/bugzilla/show_bug.cgi?id=27501



Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>