core: don't trust msc from present complete notify

Sometimes X sends bogus complete notifies with invalid msc number.
Instead just use msc=0, divisor=1 to get the next complete notify.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>

src/picom.c

@@ -1520,8 +1520,8 @@ handle_present_complete_notify(session_t *ps, xcb_present_complete_notify_event_
 	}
 
 	if (ps->frame_pacing) {
-		auto cookie = xcb_present_notify_msc(
-		    ps->c, session_get_target_window(ps), 0, cne->msc + 1, 0, 0);
+		auto cookie =
+		    xcb_present_notify_msc(ps->c, session_get_target_window(ps), 0, 0, 1, 0);
 		set_cant_fail_cookie(ps, cookie);
 	}