Handle empty queue after K_CF_RUN_LOOP_RUN_HANDLED_SOURCE
#245
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Occassionally
CFRunLoopInMode()
returnsK_CF_RUN_LOOP_RUN_HANDLED_SOURCE
even though the_hid_read_callback()
has not been invoked, resulting in reading from an empty queue. We can handle this by re-running the run loop with a retry mechanism.