Use sysop name instead of user.email if user.number == 0 (run from JSexec)

The reported issue didnt mention JSexec, but I assume that's what was meant
by "from the command line". (?)

I honestly forgot this script even existed. It's using the old deprecated
SMTP SOML command to send a telegram to a user. There are much better ways
to do that for the local system (e.g. calling system.put_telegram), but I
suspect this script existed since before the JS object model had support
for sending user telegrams.

Anyway, this was a simple change to fix issue #623, but really this
script should probably be rewritten or removed from the repo (we use
MSP for sending inter-BBS instant messages these days instead of SMTP/SOML).

exec/sendmsg.js

@@ -31,7 +31,7 @@ do {
 		alert("Invalid HELO response: " + rsp);
 		break;
 	}
-	sock.send("SOML FROM: "+user.email+"\r\n");
+	sock.send("SOML FROM: "+ (user.number ? user.email : system.operator) +"\r\n");
 	if(Number((rsp=sock.recvline()).slice(0,3))!=250) {
 		alert("Invalid SOML response: " + rsp);
 		break;