ole32: Check for pcbSize parameter of CompositeMonikerImpl_GetSizeMax being NULL, rather than non-NULL.

As per MSDN, if the object has no connections then
IOleObject::EnumAdvises should return a NULL enumerator and S_OK. This
is the case when This->oleAdviseHolder is NULL, so do this and avert a
potential NULL dereference of This->oleAdviseHolder (found by
Coverity).

Fix typo in LPSAFEARRAY_Unmarshal where the check for the failure of
the SafeArrayCreateEx call was missing a dereference operator (found
by Coverity).

Remove deadcode in SafeArrayPutElement, as lpBstr cannot be NULL
because of the check at the top of the function on pvData (found by
Coverity).

Free ptr in console_input_append_hist before returning, otherwise it
will be leaked (found by Coverity).
Remove the setting of last error on mem_alloc failure, as it is already
done in mem_alloc.

Also add numero-sign to Courier.