stale pickup_burden message in tty after

- tty interface left a stale prompt on the topl, clear it

doc/fixes34.1

@@ -89,6 +89,7 @@ X11: getlin dialog got steadily narrower each time it was used
 unix: install recover command into GAMEDIR by default
 tty: correctly handle an empty TERM environment variable
 tty: don't lose messages when ESC has canceled their display
+tty: clear topl after pickup_burden prompt
 
 
 General New Features

src/pickup.c

@@ -1122,6 +1122,7 @@ boolean telekinesis;
 		case 'n':  result =  0; break;
 		default:   break;	/* 'y' => result == 1 */
 		}
+		clear_nhwindow(WIN_MESSAGE);
 	    }
 	}
     }