x11-wm/hyprland: unbreak system info after f16b003f6abd

$ Hyprland
...
[LOG] ===== SYSTEM INFO: =====
[LOG] System name: FreeBSD<garbage>
[LOG] Node name: foo.bar<garbage>
[LOG] Release: 13.2-RELEASE<garbage>
[LOG] Version: [...]<garbage>
...

(cherry picked from commit 191560484b00a814348ef4e88e6ba954c9e3b686)