segfault on setup with no params

[systemcrash]

I can reliably produce a segfault by running a proto script with

proto_x_setup() {
	local config="$1"; shift
	...
	proto_run_command "$config"
}

kern.info: [341953.079132] netifd[20778]: segfault at 0 ip 00007fc4a52f5345 sp 00007ffea5432b30 error 4 in libc.so[5b345,7fc4a52ae000+58000] likely on CPU 0 (core 0, socket 0)
kern.info: [341953.145301] Code: 02 00 48 83 ec 58 64 4c 8b 34 25 28 00 00 00 4c 89 75 c8 49 89 d6 67 e8 5c 44 fe ff 49 89 c7 e8 ec 47 fe ff c7 00 02 00 00 00 <80> 3b 00 74 77 49 89 c4 be 2f 00 00 00 48 89 df 67 e8 26 95 00 00

Options shall be present for the proto handler to be useful, but it seems there are no checks that they are present.

netifd.1770568371.20778.11.core.zip