Fix logging of sepolicy pathname on policy load.

I9d83122e276a25d2e7c928b724344d5f3420af73 eliminated a temporary path
variable but ended up using the wrong index in the sepolicy_file[] array,
thereby indexing off the end of the array or logging the
wrong path.

Change-Id: If1b61c938bdcf53aef000d45e9415ded68a96585
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>