docbook2mdoc: do not access null pointers when the document element is

docbook2mdoc: do not access null pointers when the document element is

[schwarze]

Log Message:
-----------
do not access null pointers when the document element is <title>

Modified Files:
--------------
    docbook2mdoc:
        docbook2mdoc.c

Revision Data
-------------
Index: docbook2mdoc.c
===================================================================
RCS file: /home/cvs/mdocml/docbook2mdoc/docbook2mdoc.c,v
retrieving revision 1.96
retrieving revision 1.97
diff -Ldocbook2mdoc.c -Ldocbook2mdoc.c -u -p -r1.96 -r1.97
--- docbook2mdoc.c
+++ docbook2mdoc.c
@@ -103,10 +103,12 @@ pnode_printpara(struct format *p, struct
 {
 	struct pnode	*pp;
 
-	if ((pp = TAILQ_PREV(pn, pnodeq, child)) == NULL &&
-	    (pp = pn->parent) == NULL)
+	if (pn->parent == NULL)
 		return;
 
+	if ((pp = TAILQ_PREV(pn, pnodeq, child)) == NULL)
+	    pp = pn->parent;
+
 	switch (pp->node) {
 	case NODE_ENTRY:
 	case NODE_LISTITEM:
@@ -920,7 +922,8 @@ pnode_print(struct format *p, struct pno
 		pnode_printtgroup(p, pn);
 		break;
 	case NODE_TITLE:
-		if (pn->parent->node == NODE_BOOKINFO) {
+		if (pn->parent != NULL &&
+		    pn->parent->node == NODE_BOOKINFO) {
 			macro_open(p, "Nd");
 			break;
 		}
@@ -1045,7 +1048,8 @@ pnode_print(struct format *p, struct pno
 		macro_line(p, "Ed");
 		break;
 	case NODE_TITLE:
-		if (pn->parent->node == NODE_BOOKINFO)
+		if (pn->parent != NULL &&
+		    pn->parent->node == NODE_BOOKINFO)
 			macro_line(p, "Sh AUTHORS");
 		break;
 	default:
--
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