Portability bug in genbki.sh --> initdb hangup

Can someone please apply this portability patch to genbki.sh ? (Mark or
Bruce?)
It fixes a problem when cpp gives a warning when precompiling /dev/null
like:
"/dev/null", line 1: 1506-229 (W) File is empty.
This leads to a hangup when doing the description load during initdb,
since stderr also ends up in the global1.description and
local1_template1.description

stderr has to be redirected to /dev/null:

*** genbki.sh.ori    Tue Aug 21 18:18:03 1998
--- genbki.sh    Tue Aug 25
10:32:19 1998
***************
*** 24,30 ****
  >/tmp/genbki.tmp


  PATH=$PATH:/lib:/usr/ccs/lib:/usr/ccs/lbin        # to find cpp
! cpp
/dev/null >/dev/null
  if [ "$?" -ne 0 ]
  then    echo "Can't find cpp.
 Exiting." 1>&2
      exit 1
--- 24,30 ----
  >/tmp/genbki.tmp


  PATH=$PATH:/lib:/usr/ccs/lib:/usr/ccs/lbin        # to find cpp
! cpp
/dev/null >/dev/null 2>&1
  if [ "$?" -ne 0 ]
  then    echo "Can't find cpp.
 Exiting." 1>&2
      exit 1