--- bsdmainutils/usr.bin/calendar/calendar.c.orig	2020-07-10 12:54:50.794377595 +0200
+++ bsdmainutils/usr.bin/calendar/calendar.c	2020-07-10 12:55:46.006196455 +0200
@@ -199,6 +199,7 @@
 						exit(0);
 				}
 				cal();
+				endpwent();
 				exit(0);
 			}
 			/* parent: wait a reasonable time, then kill child if