Fails to lock with xflock4

Related to this bug report. When xflock4 is called, be it via the terminal or panel button or elsewhere, the session fails to lock:

/usr/bin/xflock4: 52: arithmetic expression: expecting primary: "2**31 - 1"

Issuing xfce4-screensaver-command --lock works, however.

System info:

`Linux voidlinux 6.12.28_1 #1 SMP PREEMPT_DYNAMIC Sun May 11 04:22:51 UTC 2025 x86_64 GNU/Linux`

Installed versions of present components:

exo-4.20.0_1 libxfce4panel-4.20.4_1 libxfce4ui-4.20.1_1 libxfce4util-4.20.1_1 libxfce4windowing-4.20.2_3 mousepad-0.6.5_1 ristretto-0.13.4_1 xfce-polkit-0.3_2 xfce4-4.20_1 xfce4-appfinder-4.20.0_1 xfce4-clipman-plugin-1.7.0_1 xfce4-cpugraph-plugin-1.3.0_1 xfce4-fsguard-plugin-1.2.0_1 xfce4-notifyd-0.9.7_1 xfce4-panel-4.20.4_1 xfce4-power-manager-4.20.0_1 xfce4-pulseaudio-plugin-0.5.1_1 xfce4-screensaver-4.18.4_1 xfce4-screenshooter-1.11.1_1 xfce4-sensors-plugin-1.4.5_1 xfce4-session-4.20.2_1 xfce4-settings-4.20.1_1 xfce4-systemload-plugin-1.3.3_1 xfce4-taskmanager-1.5.8_1 xfce4-weather-plugin-0.11.3_1 xfce4-whiskermenu-plugin-2.9.2_1 xfconf-4.20.0_1 xfdesktop-4.20.1_1 xfwm4-4.20.0_1 xfwm4-themes-4.10.0_4