small bug in gri 1.9c

["Johan K. Reinalda" <johan@ECE.ORST.EDU>]

Gerard copied my mailbox-gateway code from an older set of sources,
and didn't catch the bug i had left in there.
The gateway command is NOT protected per individual user, since the
check for privs is missing. (MBsecure still works)
Also, the R: line in forward.c has a small bug with @:call field
Diffs are given below to fix both...

Johan.
---------------

In MAILBOX.C

2405c2405,2409
<               if(Nrifaces[0].iface == NULLIF){
---
>         if(!(m->privs & NETROM_CMD)) {
>             tputs(Noperm);
>             return 0;
>         }
>         if(Nrifaces[0].iface == NULLIF){
2443c2447,2451
<               if((ifp = if_lookup(argv[1])) == NULLIF) {
---
>         if(!(m->privs & AX25_CMD)) {
>             tputs(Noperm);
>             return 0;
>         }
>         if((ifp = if_lookup(argv[1])) == NULLIF) {

In FORWARD.C

123c123
<                       usprintf(m->user,"R:%s @%s.%s [%s] %s #:%u Z:%s\n",
---
>             usprintf(m->user,"R:%s @:%s.%s [%s] %s #:%u Z:%s\n",

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