[PATCH v2 0/2] MR6929: kernelbase: Properly return 0 from EnumSystemFirmwareTable on error.

[Evan Tang (＠etang-cw)]

6d1df55bf3b6051ad61e9c7cb7d63f13c1b9771f changed `NtQuerySystemInformation(SystemFirmwareTableInformation, ...)` to return 0 on error, which left `get_firmware_table` returning -16

This would be interpreted as a very large number by applications, breaking them.

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  v2: kernelbase: Add test for EnumSystemFirmwareTables on missing provider.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/6929