Bug#178159: can not install on parisc64

[Fumitoshi UKAI <ukai@debian.or.jp>]

Package: libc6
Version: 2.3.1-10
Severity: important

(Reading database ... 13321 files and directories currently installed.)
Preparing to replace libc6 2.2.5-14 (using .../libc6_2.3.1-10_hppa.deb) ...
/var/lib/dpkg/tmp.ci/preinst: line 122: [: =: unary operator expected
WARNING: This version of libc6 requires that you be
running at least a 2.4.19-pa17 in (2.4) or 2.5.53-pa3
(in 2.5) to work properly.
Earlier kernels did not provide the proper functionality
in order for the system to be stable.
dpkg: error processing /var/cache/apt/archives/libc6_2.3.1-10_hppa.deb (--unpack):
 subprocess pre-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.3.1-10_hppa.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Around line 122 of libc6 preint:

    117     # (in 2.4.x), 2.5.53-pa3 or later (in 2.5.x), to function properly.
    118     # Note that parisc64 kernel version scheme is "`uname -r`-64".
    119     if [ "$realarch" = parisc64 ]
    120     then
    121         kernel_ver=`uname -r`
    122         if [ $ver = ${kernel_ver/pa/} ]
    123         then
    124             if dpkg --compare-versions "$kernel_ver" lt 2.4.19-64
    125             then

$ver is not defined, first appeared here.  
Should $ver be $kernel_ver here?

    122         if [ $kernel_ver = ${kernel_ver/pa/} ]

Regards,
Fumitoshi UKAI