Work around GCC 10 build failure

Signed-off-by: Jonathan Dieter <jdieter@gmail.com>

duperemove.spec

@@ -1,6 +1,8 @@
+%define _legacy_common_support 1
+
 Name:           duperemove
 Version:        0.11.1
-Release:        2%{?dist}
+Release:        3%{?dist}
 Summary:        Tools for deduping file systems
 License:        GPLv2
 URL:            https://github.com/markfasheh/%{name}
@@ -53,6 +55,9 @@ rm -f xxhash.c xxhash.h
 %{_sbindir}/show-shared-extents
 
 %changelog
+* Mon Feb 03 2020 Jonathan Dieter <jdieter@gmail.com> - 0.11.1-3
+- Work around GCC 10 build failure
+
 * Tue Jan 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.11.1-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild