[PATCH] selinux: Remove unneeded k[cm]alloc() return value casts

Remove redundant casts of k*alloc() return values in
security/selinux/ss/services.c

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Acked-by: Stephen Smalley <sds@epoch.ncsc.mil>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>