Bug#465540: post-installation script doesn't work in zsh

[Matthias Berndt <matthias_berndt@gmx.de>]

Package: htdig
Version: 1:3.2.0b6-5
Severity: normal

--- Please enter the report below this line. ---
Hi,
I just noticed that the post-installation script fails when /bin/sh points 
to /usr/bin/zsh rather than /bin/bash. This should be fixed.
--- System information. ---
Architecture: i386
Kernel:       Linux 2.6.24-1-686

Debian Release: lenny/sid
  500 unstable        ftp2.de.debian.org 
  500 etch-wx         apt.wxwidgets.org 
  500 any             jens.lody.name 

--- Package information. ---
Depends                (Version) | Installed
================================-+-==============
debconf              (>= 1.2.9)  | 1.5.19
 OR debconf-2.0                  | 
libc6                 (>= 2.7-1) | 2.7-6
libgcc1                          | 1:4.3-20080202-1
libstdc++6         (>= 4.1.1-21) | 4.3-20080202-1
lockfile-progs                   | 0.1.11
perl                             | 5.8.8-12
zlib1g              (>= 1:1.1.4) | 1:1.2.3.3.dfsg-11