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Jan Kiszka authored
Since 1909729e , the device's close operation is always interposed with __rtdm_dev_close, thus will never be NULL even if the driver provides none. Other callers of rtdm_fd_enter, timerfd and mqueue, also provide close handlers. So drop the default initialization. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
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