!7 fix Failed to start redshift-gtk.service: Unit redshift-gtk.service not found.

From: @tanyulong2021 
Reviewed-by: @dou33 
Signed-off-by: @dou33

redshift.spec

@@ -6,7 +6,7 @@
 
 Name:    redshift
 Version: 1.12
-Release: 3%{dist}
+Release: 4
 Summary: Adjusts the color temperature of your screen according to time of day
 License: GPLv3+
 
@@ -76,11 +76,15 @@ autopoint -f && AUTOPOINT="intltoolize --automake --copy" autoreconf -f -i
 desktop-file-validate %{buildroot}%{_datadir}/applications/redshift.desktop
 desktop-file-validate %{buildroot}%{_datadir}/applications/redshift-gtk.desktop
 
-%post
+%post -n %{name}-gtk
 %systemd_user_post %{name}-gtk.service
+%post
+%systemd_user_post %{name}.service
 
-%preun
+%preun -n %{name}-gtk
 %systemd_user_preun %{name}-gtk.service
+%preun
+%systemd_user_preun %{name}.service
 
 
 %files -f %{name}.lang
@@ -104,5 +108,8 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/redshift-gtk.desktop
 %{_userunitdir}/%{name}-gtk.service
 
 %changelog
+* Tue Mar 08 2022 tanyulong <tanyulong@kylinos.cn> - 1.12-4
+- add %post -n %{name}-gtk ;%preun -n %{name}-gtk to spec file
+
 * Thu Jul 23 2020 Zhao Yang <yangzhao1@kylinos.cn> - 1.12-3
 - Initial release for OpenEuler