Reviewed by John

    Reviewed by John

        Fix for this bug:

        <rdar://problem/3966311> REGRESSION (Mail): Hitting return makes space character disappear

        * khtml/editing/htmlediting.cpp:
        (khtml::InsertParagraphSeparatorCommand::doApply): When writing the code to insert a block
        in response to the return key, I did not write code to cover the case described in the bug.
        Now I have.
        * layout-tests/editing/inserting/insert-div-025-expected.txt: Added.
        * layout-tests/editing/inserting/insert-div-025.html: Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8425 268f45cc-cd09-0410-ab3c-d52691b4dbfc