[Libreoffice] [REVIEW 3-4] fdo#42147: fix crash

[Ivan Timofeev]

Hi there!

Please review
http://cgit.freedesktop.org/libreoffice/core/commit/?id=dc61ebdc93a777f4f41c1ae837bdb6098ecffcce
and push to 3-4 if the commit is ok for you.

It seems, due to wrong condition (using & instead of ==) the code casted 
SwCntntNode to SwTxtNode, but the SwCntntNode is a base class of the 
SwTxtNode.

Thanks,
     Ivan