Setting WIRESHARK_LOG_LEVEL=debug breaks interface capture

Summary

Setting a log level of "debug" using an environment variable breaks dumpcap. This does not happen setting the log level from the CLI.

Steps to reproduce

run:

$ WIRESHARK_LOG_LEVEL=debug wireshark

What is the current bug behavior?

Dumpcap reports debug information to the parent process as an error. Capture stops with multiple meaningless error dialogs.

What is the expected correct behavior?

Debug output should be logged from the child process to the console.