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NtQueryInformationProcess(ProcessHandleInformation) can return STATUS_SUCCESS with invalid handle data for certain processes ("minimal" processes on Windows 10). This can cause a crash when there's an attempt to access that data. Fix that by setting NumberOfHandles to zero before calling NtQueryInformationProcess. Addresses: https://cygwin.com/pipermail/cygwin-patches/2021q4/011611.html