Use ldconfig scriptlet macros

libxcb.spec

@@ -2,7 +2,7 @@
 
 Name:       libxcb
 Version:    1.13
-Release:    2%{?dist}
+Release:    3%{?dist}
 Summary:    A C binding to the X11 protocol
 License:    MIT
 URL:        http://xcb.freedesktop.org/
@@ -76,9 +76,9 @@ sed 's,@libdir@,%{_libdir},;s,@prefix@,%{_prefix},;s,@exec_prefix@,%{_exec_prefi
 
 find $RPM_BUILD_ROOT -name '*.la' -delete
 
-%post -p /sbin/ldconfig
+%ldconfig_post
 
-%postun -p /sbin/ldconfig
+%ldconfig_postun
 
 %files
 %{_libdir}/libxcb-composite.so.0*
@@ -117,6 +117,9 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
 %{_pkgdocdir}
 
 %changelog
+* Fri Jun 29 2018 Adam Jackson <ajax@redhat.com> - 1.13-3
+- Use ldconfig scriptlet macros
+
 * Mon Mar 19 2018 Adam Jackson <ajax@redhat.com> - 1.13-2
 - Build with python3