mdocml: If a block body gets broken, that's no good reason to extend the

[schwarze@mdocml.bsd.lv]

Log Message:
-----------
If a block body gets broken, that's no good reason to extend the 
scope of the end macro.  Instead, only keep the tail scope open if
the end macro macro calls an explicit macro and actually breaks
that.  This corrects syntax tree structure and fixes an assertion
found by jsg@ with afl (test case 098/Apr27).

Modified Files:
--------------
    mdocml:
        mdoc_macro.c

Revision Data
-------------
Index: mdoc_macro.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/mdoc_macro.c,v
retrieving revision 1.196
retrieving revision 1.197
diff -Lmdoc_macro.c -Lmdoc_macro.c -u -p -r1.196 -r1.197
--- mdoc_macro.c
+++ mdoc_macro.c
@@ -673,6 +673,8 @@ blk_exp_close(MACRO_PROT_ARGS)
 
 	if (endbody != NULL)
 		n = endbody;
+
+	ntok = TOKEN_NONE;
 	for (j = 0; ; j++) {
 		lastarg = *pos;
 
@@ -700,7 +702,7 @@ blk_exp_close(MACRO_PROT_ARGS)
 	}
 
 	if (n != NULL) {
-		if (n != mdoc->last && n->flags & MDOC_BROKEN) {
+		if (ntok != TOKEN_NONE && n->flags & MDOC_BROKEN) {
 			target = n;
 			do
 				target = target->parent;
--
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