sw: prevent crash

In case some error happens when exporting OLE to docx.

Change-Id: I5673f13e2fb4bc7887f1fc54771532c049129047
Correct wrong variable name.

Change-Id: Ic76e328e7600aab54dfb8318e1d9667fa6d309a5
sw: export OLE objects outside run properties

Until now the export of OLE objects was being done adding them to the
m_postponedOLE member and reading that member when the run properties
are closed, but it can happen that we receive an OLE object while not
in the middle of the row properties.

We have extracted the code that actually does the export to a
separate method and call it if m_postponedOLE is not available.

Some lines are incorrectly indented to make the purpose of this patch
more evident, and will be corrected in the next patch.

Change-Id: I3e0d785c99c659ec35d0c02dfc52367dcb6880b7
Correct indentation

Change-Id: I3ce85a17966c155c71cd3e3d1a142cc02ec34bd7