disable LTO to workaround a possible linker bug

- related to #1871971

man-db.spec

@@ -1,10 +1,13 @@
 %global cache /var/cache/man
 %global gnulib_ver 20140202
 
+# workaround for bug #1871971
+%global _lto_cflags %{nil}
+
 Summary: Tools for searching and reading man pages
 Name: man-db
 Version: 2.9.2
-Release: 5%{?dist}
+Release: 6%{?dist}
 # GPLv2+ .. man-db
 # GPLv3+ .. gnulib
 License: GPLv2+ and GPLv3+
@@ -231,6 +234,10 @@ fi
 %config(noreplace) %{_sysconfdir}/cron.daily/man-db.cron
 
 %changelog
+* Thu Sep 03 2020 Nikola Forró <nforro@redhat.com> - 2.9.2-6
+- disable LTO to workaround a possible linker bug
+  related to #1871971
+
 * Tue Aug 04 2020 Nikola Forró <nforro@redhat.com> - 2.9.2-5
 - reenable LTO