Fix multiple cast-to-union warnings related to casting kuid_t and kgid_t
types to kid_t union type. Also fix incompatible type warning that
arises from accidental omission of "__rcu" qualifier on the struct
setid_ruleset pointer in the argument list for safesetid_file_read().
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: NThomas Cedeno <thomascedeno@google.com>
Signed-off-by: NMicah Morton <mortonm@chromium.org>