Merge argument parsing changes into this copy of telnet.

Submitted by:	markm
Approved by:	bmah


git-svn-id: http://svn0.us-east.freebsd.org/base/head/contrib/telnet@107299 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f

telnet/commands.c

@@ -2284,8 +2284,12 @@ tn(int argc, char *argv[])
 #endif
 	    (hostname = strrchr(hostp, ':')) == NULL)
 	    hostname = strrchr(hostp, '@');
-	hostname++;
-	srcroute = 1;
+	if (hostname == NULL) {
+	    hostname = hostp;
+	} else {
+	    hostname++;
+	    srcroute = 1;
+	}
     } else
         hostname = hostp;
     if (!portp) {