ole32: Always create a window for the main apartment.

[Robert Shearman]

---
  dlls/ole32/compobj.c |    3 +++
  1 files changed, 3 insertions(+), 0 deletions(-)

Otherwise, we'll get the following error message when attempting to host 
an object inside it:
err:ole:apartment_hostobject_in_hostapt host apartment didn't create window

Normal single-threaded apartments are ok because we can make more of 
them, but the main apartment is special.
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