Bug: Potential Stack Overwrite in display_prompt
Danger: Minor - Probably never see it actually happen, but the chance is there.
Found by: Nick Gammon
Fixed by: Nick Gammon

---

comm.c, display_prompt;
Find:

            if( pstat != 0x80000000 )
               snprintf( pbuf, MAX_STRING_LENGTH, "%d", pstat );
            pbuf += strlen( pbuf );

Replace with:

            if( pstat != 0x80000000 )
               snprintf( pbuf, MAX_STRING_LENGTH - strlen (buf), "%d", pstat );
            pbuf += strlen( pbuf );