Fix: when having [text text-123 "0"], the default input becomes blank, not a text "0". Ref: http://wordpress.org/support/topic/textbox-default-value-0-not-shown

git-svn-id: https://plugins.svn.wordpress.org/contact-form-7/trunk@887909 b8457f37-d9ea-0310-8a92-e5e31aec5664