ClientComms.close(true) doesn't work

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- [ ] Bug exists Release Version 1.2.0 ( Master Branch)
- [ ] Bug exists in MQTTv3 Client on Snapshot Version 1.2.1-SNAPSHOT (Develop Branch)
- [ ] Bug exists in MQTTv5 Client on Snapshot Version 1.2.1-SNAPSHOT (Develop Branch)

I don't fill out the form because the branches and releases obviously are not up-to date. The bug exists in 1.2.0 and 1.2.1.

ClientComms.close(boolean force) doesn't work correctly when called with force=true.
There are apperently missing parenthesis in l. 230:
```
if (!isDisconnected() || force) { // should be (!(isDisconnected() || force)) or better (!isDisconnected() && !force)
//@TRACE 224=failed: not disconnected
log.fine(CLASS_NAME, methodName, "224");
...
}
```