LONDON -- Queen Elizabeth’s granddaughter Zara Tindall is pregnant with her third child, her husband announced Wednesday.Former rugby star Mike Tindall, who has two daughters with Zara — 6-year-old Mia and 2-year-old Lena — said he wanted their third child to be a boy.“It’s been a good week for me, had a little scan last week — third Tindall on its way,” he said on a podcast he co-hosts.