|  | @@ -294,6 +294,7 @@ static void BM_FilterInitDestroy(benchmark::State &state) {
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				|  |  |    }
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				|  |  |    grpc_channel_stack_destroy(&exec_ctx, channel_stack);
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				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
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				|  |  | +  gpr_free(channel_stack);
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				|  |  |  
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				|  |  |    state.SetLabel(label.str());
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				|  |  |  }
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				|  | @@ -360,6 +361,7 @@ static void BM_FilterInitSendInitialMetadataThenDestroy(
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				|  |  |    }
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				|  |  |    grpc_channel_stack_destroy(&exec_ctx, channel_stack);
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				|  |  |    grpc_exec_ctx_finish(&exec_ctx);
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				|  |  | +  gpr_free(channel_stack);
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				|  |  |  
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				|  |  |    state.SetLabel(label.str());
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				|  |  |  }
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