LogEntry init bug results in empty messages

[lm2s]

Incorrect initializer in LogEntry results in empty log entry message.
Tries to cast cbor?["msg"] as CBOR.byteString, but it fails because cbor?["msg"] is of type utf8String.

if case let CBOR.byteString(msg)? = cbor?["msg"] {self.msg = msg} (McuMgrResponse.swift:524)

Debugger output:

(lldb) p cbor?["msg"]
(SwiftCBOR.CBOR?) $R0 = utf8String {
  utf8String = "rsn:SOFT, cnt:1, img:0.0.8.3, hash:ac50b09683a5bbbed0429b02dc8b4e0aee4e0bf5282edc9aa0ca50bcca479f4d"
}

As such LogEntry.msg stays nil.

To fix this, LogEntry.msg should be of type CBOR and the casting should be performed on the getMessage() method, which already has partially the necessary logic to do so and just needs minor adjustments.

I'll submit a PR with a fix.

[bgiori]

JuulLabs-OSS/mcumgr-android#58

It seems you're firmware log version is old. This library only supports LOG_VERSION=3

[lm2s]

Yes, this was the issue. Thank you :)