fix build on EPEL8

version_no_tilde macro is missing on EPEL8

xvidcore.spec

@@ -6,7 +6,7 @@ Release:        9%{?dist}
 Summary:        MPEG-4 Simple and Advanced Simple Profile codec
 License:        GPL-2.0-or-later
 URL:            https://www.xvid.com/
-Source0:        https://downloads.xvid.com/downloads/%{name}-%{version_no_tilde}.tar.bz2
+Source0:        https://downloads.xvid.com/downloads/%{name}-%{version}.tar.bz2
 
 BuildRequires:  gcc
 BuildRequires:  make