|  | @@ -118,8 +118,9 @@ class ServerCallbackCall {
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				|  |  |    // should be called, false otherwise.
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				|  |  |    bool UnblockCancellation() {
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				|  |  |      return on_cancel_conditions_remaining_.fetch_sub(
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				|  |  | -						     1, std::memory_order_acq_rel) == 1; }
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				|  |  | -  
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				|  |  | +               1, std::memory_order_acq_rel) == 1;
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				|  |  | +  }
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				|  |  | +
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				|  |  |    std::atomic_int on_cancel_conditions_remaining_{2};
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				|  |  |    std::atomic_int callbacks_outstanding_{
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				|  |  |        3};  // reserve for start, Finish, and CompletionOp
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