tty message loss

- typing ESC would lose messages if msg_window was not displayed
- incorporate <Someone>'s fix, which causes them to be tracked, just not
displayed, and thus still available for ^P viewing later on

win/tty/wintty.c

@@ -1745,8 +1745,7 @@ tty_putstr(window, attr, str)
     }
 
     if(str == (const char*)0 ||
-	( (cw->flags & WIN_CANCELLED) && 
-	  (cw->type != NHW_MESSAGE || !iflags.prevmsg_window) ))
+	((cw->flags & WIN_CANCELLED) && (cw->type != NHW_MESSAGE)))
 	return;
     if(cw->type != NHW_MESSAGE)
 	str = compress_str(str);