pccardctl: add array out-of-bounds exception (2)

Fix another instance where an array out-of-bounds exception relating to
func_id was triggered. Spotted at[1], still pending bugfix noted by
Wolfram Sang.

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=406251

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>