[false+] fails to start on wayland

[yschaeff]

On my system Wings3d 2.1.5 will not start when running Wayland. Using Xorg or downgrading to 1.5.3 does work.

Debian 64bit, Linux 4.9.0
Gnome Shell 3.22.3
Xwayland 1.19.3

Dump written 2017-4-19_21-53
Version: 2.1.5
Window: "<Unknown Window Name>"
Reason: {{error,no_gl_context,5075},
[{gl,rec,1,[{file,"gen/gl.erl"},{line,298}]},
{wings_gl,init_extensions,0,[{file,"wings_gl.erl"},{line,164}]},
{wings_gl,init,1,[{file,"wings_gl.erl"},{line,49}]},
{wings,init,1,[{file,"wings.erl"},{line,121}]}]}