[PATCH 0/1] MR1852: winebus.sys: Declare a variable only when used

[Gerald Pfeifer (＠gerald)]

udev_add_device declares a variable (product) even when it is not used
on all platforms. Use the same condition for the declaration that already
guards the code.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/1852