Re: [PATCH 0/1] MR3363: windowscodecs: Handle PNG histogram (hIST) chunk type.

[Esme Povirk (＠madewokherd)]

So I noticed while checking this that all of the current metadata handlers are wrong. PropVariantClear uses CoTaskMemFree, so we should be allocating values using CoTaskMemAlloc.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/3363#note_39838