.IP without line args is not an ERROR

[Ingo Schwarze <schwarze@usta.de>]

OK to commit this to bsd.lv, too?

----- Forwarded message from Ingo Schwarze <schwarze@cvs.openbsd.org> -----

From: Ingo Schwarze <schwarze@cvs.openbsd.org>
Date: Wed, 27 Oct 2010 04:17:45 -0600 (MDT)
To: source-changes@cvs.openbsd.org

CVSROOT:	/cvs
Module name:	src
Changes by:	schwarze@cvs.openbsd.org	2010/10/27 04:17:45

Modified files:
	usr.bin/mandoc : man_validate.c 

Log message:
The man(7) macros .HP .IP .RS .TP accept *optional* arguments,
so do not throw an ERROR when there are none.
Formatting is already correct:
With no arguments, use default widths and no tag.
Problem reported by naddy@, thanks.

----- End forwarded message -----

Index: man_validate.c
===================================================================
RCS file: /cvs/src/usr.bin/mandoc/man_validate.c,v
retrieving revision 1.30
diff -u -p -r1.30 man_validate.c
--- man_validate.c	15 Oct 2010 20:45:03 -0000	1.30
+++ man_validate.c	27 Oct 2010 10:04:00 -0000
@@ -310,9 +310,7 @@ check_par(CHKARGS)
 				break;
 			return(man_nmsg(m, n, MANDOCERR_ARGSLOST));
 		default:
-			if (n->nchild)
-				break;
-			return(man_nmsg(m, n, MANDOCERR_NOARGS));
+			break;
 		}
 
 	return(1);
--
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