"method" can be undefined in "callConductor"

[mjbrisebois]

If any code fails before method is assigned the method would remain undefined. This code is quite messy and should be made less complicated. Once issue #14 is complete, we can depend on the client being resilient to past interruptions. Then this code should be restructured to also be more resilient.

PR #28 is a temporary fix that raises the first try/catch error.

https://github.com/Holo-Host/holo-envoy/blob/develop/src/index.ts#L690-L716

	let method;
	try {
	    if ( typeof client === "string" )
		client			= this.hcc_clients[ client ];

	    let ready_state		= client.socket.readyState;
	    if ( ready_state !== 1 ) {
		log.silly("Waiting for 'CONNECTED' state because current ready state is %s (%s)", ready_state, READY_STATES[ready_state] );
		await client.opened();
	    }

	    // Assume the method is "call" unless `call_spec` is a string.
	    method			= "call";
	    if ( typeof call_spec === "string" ) {
		log.debug("Admin call spec details: %s( %s )", () => [
		    call_spec, Object.entries(args).map(([k,v]) => `${k} : ${typeof v}`).join(", ") ]);
		method			= call_spec;
	    }
	    else {
		log.debug("Call spec details: %s::%s->%s( %s )", () => [
		    call_spec.instance_id, call_spec.zome, call_spec.function, Object.entries(call_spec.args).map(([k,v]) => `${k} : ${typeof v}`).join(", ") ]);
		args			= call_spec;
	    }
	} catch ( err ) {
	    console.log("callConductor preamble threw", err );
      throw new HoloError("callConductor preamble threw error: %s", String(err));
	}