When I lookup fail, never give me error

[yaotiancheng-ola]

Describe the bug

When I encounter a lookup failure, starscream doesn't tell me any error messages

Steps to Reproduce

connect ws when the host was Unable to dns parse

Expected behavior

I did't receive any error

Environment:

• OS/Version: iOS any version
• Starscream Version 4.0.8
• Xcode version 15.0+

Additional context

NW callback an waiting，the waiting contains error