mdocml: Use the default width for .RS without arguments.

mdocml: Use the default width for .RS without arguments.

[schwarze]

Log Message:
-----------
Use the default width for .RS without arguments.
Reduces groff-mandoc differences in base and Xenocara by about 4%.
Found while looking at wpa_supplicant(8).

Modified Files:
--------------
    mdocml:
        man_term.c

Revision Data
-------------
Index: man_term.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/man_term.c,v
retrieving revision 1.176
retrieving revision 1.177
diff -Lman_term.c -Lman_term.c -u -p -r1.176 -r1.177
--- man_term.c
+++ man_term.c
@@ -879,7 +879,9 @@ pre_RS(DECL_ARGS)
 
 	n = n->parent->head;
 	n->aux = SHRT_MAX + 1;
-	if (n->child != NULL && a2roffsu(n->child->string, &su, SCALE_EN))
+	if (n->child == NULL)
+		n->aux = mt->lmargin[mt->lmargincur];
+	else if (a2roffsu(n->child->string, &su, SCALE_EN))
 		n->aux = term_hspan(p, &su) / 24;
 	if (n->aux < 0 && (size_t)(-n->aux) > mt->offset)
 		n->aux = -mt->offset;
--
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