preun missing condition on number of man-db packages installed

- related: #1151558

man-db.spec

@@ -4,7 +4,7 @@
 Summary: Tools for searching and reading man pages
 Name: man-db
 Version: 2.7.0.2
-Release: 3%{?dist}
+Release: 4%{?dist}
 # GPLv2+ .. man-db
 # GPLv3+ .. gnulib
 License: GPLv2+ and GPLv3+
@@ -81,8 +81,10 @@ systemctl start man-db.timer
 
 %preun
 # stop and disable timer
-systemctl stop man-db.timer
-systemctl -q disable man-db.timer
+if [ "$1" -eq 0 ]; then
+	systemctl stop man-db.timer
+	systemctl -q disable man-db.timer
+fi
 
 %files -f %{name}.lang -f %{name}-gnulib.lang
 %{!?_licensedir:%global license %%doc}
@@ -131,6 +133,10 @@ systemctl -q disable man-db.timer
 %lang(zh_CN)   %{_datadir}/man/zh_CN/man*/*
 
 %changelog
+* Mon Oct 13 2014 jchaloup <jchaloup@redhat.com> - 2.7.0.2-4
+- preun missing condition on number of man-db packages installed
+  related: #1151558
+
 * Sun Oct 12 2014 jchaloup <jchaloup@redhat.com> - 2.7.0.2-3
 - remove executable flag for *.service and *.timer file
   resolves: #1151558