wget: Fix error in texi2pod on Perl 5.18

This gets around the following build errors that occurs on a system with
perl 5.18:

[...]
wget.pod around line 2151: Expected text after =item, not a number
wget.pod around line 2156: Expected text after =item, not a number
wget.pod around line 2162: Expected text after =item, not a number
[...]

This is already committed upstream and this patch will be unnecessary in
wget 1.15 when it is released:

commit 7f43748544f26008d0dd337704f02a6ed3200aaf
Author: Dave Reisner <dreisner@archlinux.org>
Date:   Mon Jun 17 23:31:46 2013 +0530

    Fix error in texi2pod intriduced with Perl 5.18

Signed-off-by: Andrew Ruder <andrew.ruder@elecsyscorp.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>