Spell statistics more correctly in comments.

svn path=/head/; revision=170691

sys/kern/kern_malloc.c

@@ -267,7 +267,7 @@ malloc_type_allocated(struct malloc_type *mtp, unsigned long size)
 }
 
 /*
- * A free operation has occurred -- update malloc type statistis for the
+ * A free operation has occurred -- update malloc type statistics for the
  * amount of the bucket size.  Occurs within a critical section so that the
  * thread isn't preempted and doesn't migrate while updating per-CPU
  * statistics.

sys/security/audit/audit.c

@@ -100,7 +100,7 @@ int			audit_arge;
 int			audit_in_failure;
 
 /*
- * Global audit statistiscs.
+ * Global audit statistics.
  */
 struct audit_fstat	audit_fstat;