[PATCH] add missing format strings

[Pino Toscano]

Hi,

Debian recently started to set slightly more stricter C(XX)FLAGS for 
packages, and among those there are:
  -Wformat -Wformat-security -Werror=format-security
There are few calls to error(), printk() and problem() which have no 
format string, causing them to fail the build of hurd.

Attached there is a git-format'ed patch to fix all (hopefully) of those 
cases.

-- 
Pino Toscano

0001-Add-missing-format-strings-for-error-printk-problem.patch
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