praudit(1): return 0 on success

Cherry pick https://github.com/openbsm/openbsm/commit/ed83bb3

Submitted by:	aniketp
Reviewed by:	rwatson, 0mp
Obtained from:	OpenBSM
MFC after:	2 weeks
Sponsored by:	Google, Inc. (GSoC 2018)
Pull Request:	https://github.com/openbsm/openbsm/pull/32

contrib/openbsm/bin/praudit/praudit.1

@@ -25,7 +25,7 @@
 .\" IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd August 4, 2009
+.Dd June 11, 2018
 .Dt PRAUDIT 1
 .Os
 .Sh NAME
@@ -88,6 +88,8 @@ Events are displayed as per their descriptions given in
 .Pa /etc/security/audit_event ;
 UIDs and GIDs are expanded to their names;
 dates and times are displayed in human-readable format.
+.Sh EXIT STATUS
+.Ex -std
 .Sh FILES
 .Bl -tag -width ".Pa /etc/security/audit_control" -compact
 .It Pa /etc/security/audit_class

contrib/openbsm/bin/praudit/praudit.c

@@ -233,5 +233,5 @@ main(int argc, char **argv)
 	if (oflags & AU_OFLAG_XML)
 		au_print_xml_footer(stdout);
 
-	return (1);
+	return (0);
 }