Silence coverity warning about dead code
For some reason, coverity was complaining that the definition of
cred_type_to_str was dead code, even though it wasn't. Changing the
storage to static silences the warning. Since that's a benficial change
anyway, let's change it. At the same time, make the pointer constant as
well and move it outside of the loop since it doesn't need to be inside
the loop.
Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Acked-by: Eduardo Lima (Etrunko) <etrunko@redhat.com>