resourced/resourced: libdocker/libdocker.go; 35 LoC

Found a possible issue in [resourced/resourced](https://www.github.com/resourced/resourced) at [libdocker/libdocker.go](https://github.com/resourced/resourced/blob/e24a4db9314d09f85d39f4a4c494dcbfcab3f009/libdocker/libdocker.go#L182-L216)

Below is the message reported by the analyzer for this snippet of code. Beware that the analyzer only reports the first
issue it finds, so please do not limit your consideration to the contents of the below message.

> range-loop variable shortDescContainer used in defer or goroutine at line 193

[Click here to see the code in its original context.](https://github.com/resourced/resourced/blob/e24a4db9314d09f85d39f4a4c494dcbfcab3f009/libdocker/libdocker.go#L182-L216)

Click here to show the 35 line(s) of Go which triggered the analyzer.

```go
for _, shortDescContainer := range shortDescContainers {
container := &CompleteDockerContainer{}
container.NiceImageName = shortDescContainer.Image
container.Command = shortDescContainer.Command
container.Status = shortDescContainer.Status

wg.Add(1)

go func(container *CompleteDockerContainer) {
defer wg.Done()

fullDescContainer, err := client.InspectContainer(shortDescContainer.ID)
if err == nil && fullDescContainer != nil {
container.ID = fullDescContainer.ID
container.Created = fullDescContainer.Created
container.Path = fullDescContainer.Path
container.Args = fullDescContainer.Args
container.Config = fullDescContainer.Config
container.State = fullDescContainer.State
container.Image = fullDescContainer.Image
container.NetworkSettings = fullDescContainer.NetworkSettings
container.SysInitPath = fullDescContainer.SysInitPath
container.ResolvConfPath = fullDescContainer.ResolvConfPath
container.HostnamePath = fullDescContainer.HostnamePath
container.HostsPath = fullDescContainer.HostsPath
container.Name = fullDescContainer.Name
container.Driver = fullDescContainer.Driver
container.Volumes = fullDescContainer.Volumes
container.VolumesRW = fullDescContainer.VolumesRW
container.HostConfig = fullDescContainer.HostConfig

containersChan <- container
}
}(container)
}

```

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See the descriptions of the classifications [here](https://github.com/github-vet/rangeclosure-findings#how-can-i-help) for more information.

commit ID: e24a4db9314d09f85d39f4a4c494dcbfcab3f009