diff -ur gnupg-1.4.6-orig/g10/parse-packet.c gnupg-1.4.6/g10/parse-packet.c
--- g10/parse-packet.c 2006-10-23 15:45:54.000000000 +0200
+++ g10/parse-packet.c      2007-01-14 03:59:11.089877376 +0100
@@ -1533,7 +1533,7 @@
   buf = p = xmalloc (2 + nbytes);
   *p++ = nbits >> 8;
   *p++ = nbits;
-  for (; nbytes && length; nbytes--, --*length)
+  for (; nbytes && *length; nbytes--, --*length)
     *p++ = iobuf_get (inp);
   if (nbytes)
     {