don't call c.getrandom because older libcs don't have it
don't call c.getrandom because older libcs don't have it

See #397

raulgrell/zig,zig-lang/zig,zig-lang/zig,raulgrell/zig,zig-lang/zig,raulgrell/zig,Dimenus/zig,raulgrell/zig,andrewrk/zig,andrewrk/zig,raulgrell/zig,Dimenus/zig,Dimenus/zig