Escape macros in %changelog

Reference: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org/thread/Y2ZUKK2B7T2IKXPMODNF6HB2O5T5TS6H/
Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

dietlibc.spec

@@ -24,7 +24,7 @@
 Summary:	Small libc implementation
 Name:		dietlibc
 Version:	0.34
-Release:	0.4.%prerelease%{?dist}
+Release:	0.5.%prerelease%{?dist}
 License:	GPLv2
 Group:		Development/Libraries
 URL:		http://www.fefe.de/dietlibc/
@@ -40,7 +40,7 @@ Source0:	%{name}-%{version}.%prerelease.tar.xz
 Patch1:         dietlibc-insecure-defpath.patch
 BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-buildroot
 #Requires:	dietlibc-lib = %{version}-%{release}}
-Obsoletes:	dietlibc-lib < %{version}-%{release}}
+Obsoletes:	dietlibc-lib < %{version}-%{release}
 
 Requires:	%{name}-devel = %{version}-%{release}
 BuildRequires:	gdb
@@ -157,6 +157,9 @@ rm -rf $RPM_BUILD_ROOT
 %pkglibdir
 
 %changelog
+* Fri Feb 09 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.34-0.5.20170317
+- Escape macros in %%changelog
+
 * Wed Feb 07 2018 Fedora Release Engineering <releng@fedoraproject.org> - 0.34-0.4.20170317
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
 
@@ -344,7 +347,7 @@ rm -rf $RPM_BUILD_ROOT
 
 * Wed Feb 13 2008 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de> - 0.31-1.20080212
 - updated to CVS snapshot 20080212
-- fixed printf regression for '%+04i' style formats
+- fixed printf regression for '%%+04i' style formats
 - added %%check and run a testsuite; it does not succeed now so it is
   for informational purposes only...
 - added bunch of patches to fixes big-endian issues in string routines