#1883 broke gnome-session build

[wwwutz]

gnome-session-3.4.1-2 does not build anymore, suspecting #1883

[...]
libtool: link: gcc -Wall -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wno-sign-compare -g -O2 -o gnome-session gnome_session-gsm-app.o gnome_session-gsm-autostart-app.o gnome_session-gsm-client.o gnome_session-gsm-xsmp-client.o gnome_session-gsm-dbus-client.o gnome_session-gsm-fail-whale-dialog.o gnome_session-gsm-marshal.o gnome_session-gsm-system.o gnome_session-gsm-consolekit.o gnome_session-gsm-systemd.o gnome_session-gsm-logout-dialog.o gnome_session-gsm-inhibit-dialog.o gnome_session-gs-idle-monitor.o gnome_session-gsm-presence.o gnome_session-gdm.o gnome_session-gdm-signal-handler.o gnome_session-gdm-log.o gnome_session-main.o gnome_session-gsm-store.o gnome_session-gsm-inhibitor.o gnome_session-gsm-manager.o gnome_session-gsm-process-helper.o gnome_session-gsm-session-fill.o gnome_session-gsm-session-save.o gnome_session-gsm-shell-extensions.o gnome_session-gsm-shell.o gnome_session-gsm-xsmp-server.o  ./.libs/libgsmutil.a ../egg/.libs/libeggdesktopfile.a -lSM -lICE -lXrender -lX11 -lXtst -lXext -lXau -lgtk-3 -lgdk-3 -latk-1.0 -lpangocairo-1.0 -lgdk_pixbuf-2.0 -lcairo-gobject -lpango-1.0 -lfribidi -lcairo -ldbus-glib-1 -ldbus-1 -lupower-glib -ljson-glib-1.0 -lgio-2.0 -lgobject-2.0 -lgconf-2 -lglib-2.0
/usr/lib/gcc/x86_64-pc-linux-gnu/7.5.0/../../../../x86_64-pc-linux-gnu/bin/ld: gnome_session-gsm-logout-dialog.o: in function `gsm_logout_supports_system_suspend':
/dev/shm/mxqd/mnt/job/24378446/gnome-session-3.4.1-2/buildroot/gnome-session/gnome-session-3.4.1-2/source/gnome-session/gsm-logout-dialog.c:184: undefined reference to `up_client_get_can_suspend'
/usr/lib/gcc/x86_64-pc-linux-gnu/7.5.0/../../../../x86_64-pc-linux-gnu/bin/ld: gnome_session-gsm-logout-dialog.o: in function `gsm_logout_supports_system_hibernate':
/dev/shm/mxqd/mnt/job/24378446/gnome-session-3.4.1-2/buildroot/gnome-session/gnome-session-3.4.1-2/source/gnome-session/gsm-logout-dialog.c:190: undefined reference to `up_client_get_can_hibernate'
/usr/lib/gcc/x86_64-pc-linux-gnu/7.5.0/../../../../x86_64-pc-linux-gnu/bin/ld: gnome_session-gsm-manager.o: in function `manager_attempt_hibernate':
/dev/shm/mxqd/mnt/job/24378446/gnome-session-3.4.1-2/buildroot/gnome-session/gnome-session-3.4.1-2/source/gnome-session/gsm-manager.c:1152: undefined reference to `up_client_get_can_hibernate'
/usr/lib/gcc/x86_64-pc-linux-gnu/7.5.0/../../../../x86_64-pc-linux-gnu/bin/ld: /dev/shm/mxqd/mnt/job/24378446/gnome-session-3.4.1-2/buildroot/gnome-session/gnome-session-3.4.1-2/source/gnome-session/gsm-manager.c:1159: undefined reference to `up_client_hibernate_sync'
/usr/lib/gcc/x86_64-pc-linux-gnu/7.5.0/../../../../x86_64-pc-linux-gnu/bin/ld: gnome_session-gsm-manager.o: in function `manager_attempt_suspend':
/dev/shm/mxqd/mnt/job/24378446/gnome-session-3.4.1-2/buildroot/gnome-session/gnome-session-3.4.1-2/source/gnome-session/gsm-manager.c:1175: undefined reference to `up_client_get_can_suspend'
/usr/lib/gcc/x86_64-pc-linux-gnu/7.5.0/../../../../x86_64-pc-linux-gnu/bin/ld: /dev/shm/mxqd/mnt/job/24378446/gnome-session-3.4.1-2/buildroot/gnome-session/gnome-session-3.4.1-2/source/gnome-session/gsm-manager.c:1182: undefined reference to `up_client_suspend_sync'
collect2: error: ld returned 1 exit status