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connectToNetwork: use locally scoped err

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Sebastiaan van Stijn authored on 2019/03/20 18:16:22
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@@ -726,8 +726,7 @@ func (daemon *Daemon) connectToNetwork(container *container.Container, idOrName
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 		}
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 	}
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-	err = daemon.updateNetworkConfig(container, n, endpointConfig, updateSettings)
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-	if err != nil {
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+	if err := daemon.updateNetworkConfig(container, n, endpointConfig, updateSettings); err != nil {
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 		return err
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 	}
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