MB-100: fix print_dataStorage_content for windows

Change-Id: I4ebab9857ef0c6fda23f33677bd93d6dc0ec864c
Reviewed-on: http://review.couchbase.org/24963
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>