Index: exfield.c
===================================================================
RCS file: /usr/repo/src/sys/contrib/dev/acpica/exfield.c,v
retrieving revision 1.1.1.16
diff -u -p -r1.1.1.16 exfield.c
--- exfield.c	28 Feb 2004 20:21:52 -0000	1.1.1.16
+++ exfield.c	11 May 2005 18:34:34 -0000
@@ -264,11 +264,11 @@ AcpiExReadDataFromField (
 
 
 Exit:
-    if (ACPI_FAILURE (Status))
+    if (ACPI_FAILURE (Status) || !RetBufferDesc)
     {
         AcpiUtRemoveReference (BufferDesc);
     }
-    else if (RetBufferDesc)
+    else
     {
         *RetBufferDesc = BufferDesc;
     }