Avoid "Access denied" after saving new moderated revisions

If user doesn't have access to the moderated revision there is no sense in redirecting him/her to the revision page.

Steps to reproduce (the most simple case):

• Create node type A with enabled revision moderation.
• Allow anonymous users to edit any nodes of type A (without any other content permissions, except for "View published content").
• Create node of type A by admin.
• Edit this node by anonymous user and save it.

Expected behavior:

• Visitor is redirected back to the node/% page

Actual behavior:

• Visitor is redirected to the node/%/revisions/%/view and see "Access denied".

Patch follows.