Removed CALLBACK defaults (void statements with no effect)
Removed CALLBACK defaults (void statements with no effect)


dmtx/dmtx-wrappers,dmtx/dmtx-wrappers,NaturalHistoryMuseum/dmtx-wrappers,dmtx/dmtx-wrappers,NaturalHistoryMuseum/dmtx-wrappers,dmtx/dmtx-wrappers,NaturalHistoryMuseum/dmtx-wrappers,dmtx/dmtx-wrappers,NaturalHistoryMuseum/dmtx-wrappers,dmtx/dmtx-utils,dmtx/dmtx-utils,NaturalHistoryMuseum/dmtx-wrappers,dmtx/dmtx-wrappers,NaturalHistoryMuseum/dmtx-wrappers,NaturalHistoryMuseum/dmtx-wrappers,dmtx/dmtx-utils,dmtx/dmtx-wrappers,dmtx/dmtx-wrappers,NaturalHistoryMuseum/dmtx-wrappers