[6/6] windowscodecs: Implement IPropertyBag2::Read (try2)

[Ludger Sprenker]

try2: No VariantClear for properties befor error

@Vincent: Windows really seems to break on the first error (see the new 
tests). But as you said the free of the already read values was wrong.

---
 dlls/windowscodecs/propertybag.c       |   32 
++++++++++++++++++++++++++++++--
 dlls/windowscodecs/tests/propertybag.c |    1 -
 2 files changed, 30 insertions(+), 3 deletions(-)
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