bee-queue / bee-queue / 241

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Pull #178

travis-ci

fix(queue): always close eclient conn if it exists

Before, the eclient was created if this was true (see line 77):

```
this.settings.getEvents || this.settings.activateDelayedJobs
```

But then it was closed iff `this.settings.getEvents` was true, which
meant that `close()` would fail to terminate all connections if the
settings were `{ getEvents: false, activateDelayedJobs: true }`.

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