[PATCH v2 0/1] MR10591: winebth.sys: Support building with dbus older than 1.12.

[Vitaly Lipatov (＠lav)]

DBUS_MESSAGE_ITER_INIT_CLOSED and dbus_message_iter_abandon_container_if_open
were added in dbus 1.12. Provide a fallback definition for the macro and load
the function optionally via dlsym to allow building on systems with older dbus.

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  v2: winebth.sys: Support building with dbus older than 1.12.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10591