Use make macros (PR from tbaeder)

optipng.spec

@@ -1,6 +1,6 @@
 Name:           optipng
 Version:        0.7.7
-Release:        5%{?dist}
+Release:        6%{?dist}
 Summary:        PNG optimizer and converter
 
 License:        zlib
@@ -54,6 +54,9 @@ chmod -c 755 $RPM_BUILD_ROOT%{_bindir}/optipng
 
 
 %changelog
+* Thu Dec 10 2020 Peter Hanecak <hany@hany.sk> - 0.7.7-6
+- Use make macros (PR from  tbaeder)
+
 * Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 0.7.7-5
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild