[PATCH] oleaut32: Improve support for IDispatch in VarCat

[Alistair Leslie-Hughes]

 Hi Nikolay,

>This is suspiciously similar to default case, in last else block. Could
>it mean VariantChangeTypeEx() should be fixed instead?
I made it's own if, since I think it behaves different to the one below.  After more
testing, it appears all errors are treated as an "empty" value.

No, VariantChangeTypeEx is working as expected, and I'm in the process of 
writing tests to show this.

Best Regards
 Alistair Leslie-Hughes