Comment 2 for bug 1702043

StacktraceTop:
 ?? ()
 XGetScreenSaver (dpy=0x55a6ecad4100, timeout=timeout@entry=0x7fff4a0062d8, interval=interval@entry=0x7fff4a0062dc, prefer_blanking=prefer_blanking@entry=0x7fff4a0062e0, allow_exp=allow_exp@entry=0x7fff4a0062e4) at ../../src/GetSSaver.c:44
 disable_builtin_screensaver (unblank_screen=0, watcher=<error reading variable: value has been optimized out>) at gs-watcher-x11.c:539
 watchdog_timer (watcher=<error reading variable: value has been optimized out>) at gs-watcher-x11.c:609
 g_timeout_dispatch (source=0x55a6ecc10bf0, callback=<optimized out>, user_data=<optimized out>) at ../../../../glib/gmain.c:4629