Index: dswload.c
===================================================================
RCS file: /usr/repo/src/sys/contrib/dev/acpica/dswload.c,v
retrieving revision 1.1.1.23
diff -u -p -r1.1.1.23 dswload.c
--- dswload.c	1 Dec 2004 23:13:42 -0000	1.1.1.23
+++ dswload.c	11 May 2005 18:50:19 -0000
@@ -782,13 +782,19 @@ AcpiDsLoad2BeginOp (
         {
             *OutOp = Op;
         }
+        else
+        {
+            AcpiPsDeleteParseTree (Op);
+            Op = NULL;
+        }
     }
 
     /*
      * Put the Node in the "op" object that the parser uses, so we
      * can get it again quickly when this scope is closed
      */
-    Op->Common.Node = Node;
+    if (!Op)
+        Op->Common.Node = Node;
 
     return_ACPI_STATUS (Status);
 }