Crash sometimes when closing Firefox.

[Earnestly]

Sometimes when closing Firefox (perhaps x11 programs in general?), loliwm crashes with the following backtrace:

[23:32:38.627] (WARN) Compositor binary is suid/sgid, most likely since you are running from TTY.
[23:32:38.627] (WARN) Kernel ptracing security policy does not allow attaching to suid/sgid processes.
[23:32:38.627] (WARN) If you don't get backtrace below, try `setcap cap_sys_ptrace=eip gdb` temporarily.
#3  wlc_view_set_parent (view=0x7fe079ce5a60, parent=<optimized out>) at /home/earnest/build/pkgbuilds/wlc-git/src/wlc/src/compositor/view.c:476
#4  0x00007fe079cf44c7 in wlc_view_free (view=0x7fe07b16e4c0) at /home/earnest/build/pkgbuilds/wlc-git/src/wlc/src/compositor/view.c:210
#5  0x00007fe079cf3551 in wlc_surface_free (surface=0x7fe07b297ad0) at /home/earnest/build/pkgbuilds/wlc-git/src/wlc/src/compositor/surface.c:308
#6  0x00007fe079adc58c in destroy_resource (element=0x7fe07b286dc0, data=<optimized out>) at src/wayland-server.c:532
#7  0x00007fe079adcfa4 in wl_resource_destroy (resource=<optimized out>) at src/wayland-server.c:545
#8  0x00007fe078c2bf90 in ffi_call_unix64 () from /usr/lib/libffi.so.6
#9  0x00007fe078c2ba01 in ffi_call () from /usr/lib/libffi.so.6
#10 0x00007fe079ae0f4d in wl_closure_invoke (closure=<optimized out>, flags=<optimized out>, target=0x7fe07b286dc0, opcode=0, data=0x7fe07b20dc30) at src/connection.c:934
#11 0x00007fe079add3d6 in wl_client_connection_data (fd=<optimized out>, mask=<optimized out>, data=0x7fe07b20dc30) at src/wayland-server.c:334
#12 0x00007fe079adf1e2 in wl_event_loop_dispatch (loop=0x7fe07acf5ee0, timeout=timeout@entry=-1) at src/event-loop.c:419
#13 0x00007fe079add935 in wl_display_run (display=0x7fe07acf44c0) at src/wayland-server.c:986
#14 0x00007fe07a132020 in run () at /home/earnest/build/pkgbuilds/loliwm-git/src/loliwm/src/loliwm.c:593
#15 main (argc=5, argv=0x7fffef6c8f08) at /home/earnest/build/pkgbuilds/loliwm-git/src/loliwm/src/loliwm.c:668
[23:32:38.830] Parent exit (20140)
[23:32:38.830] Restoring tty 0
[23:32:38.866] Cleanup wlc

[Cloudef]

Probably fixed