calendar: add getpw promise

[Sebastien Marie]

Hi,

Here a patch that should correct a pledge kill in calendar.

calendar(1) use getpwent, so it needs "getpw" for running in YP
environment.

OK ?
-- 
Sebastien Marie

Index: calendar.c
===================================================================
RCS file: /cvs/src/usr.bin/calendar/calendar.c,v
retrieving revision 1.33
diff -u -p -r1.33 calendar.c
--- calendar.c  16 Nov 2015 17:49:35 -0000      1.33
+++ calendar.c  21 Nov 2015 12:16:18 -0000
@@ -119,11 +119,11 @@ main(int argc, char *argv[])
                usage();
 
        if (doall) {
-               if (pledge("stdio rpath tmppath fattr id proc exec", NULL)
+               if (pledge("stdio rpath tmppath fattr getpw id proc exec", NULL)
                    == -1)
                        err(1, "pledge");
        } else {
-               if (pledge("stdio rpath proc exec", NULL) == -1)
+               if (pledge("stdio rpath getpw proc exec", NULL) == -1)
                        err(1, "pledge");
        }