Resolved some issues I encountered when fuzzing telnet

[Kherrisan]

To be honest, the code in this repository is not ready to use out of the box, not to mention reproducing the complete experimental results. I guess the authors have made some modifications on this version, but these changes have not been pushed to the repository yet.

I try my best to resolved some of the issues I encountered when fuzzing telnet, and push to my forked repository.

Kherrisan/LTL-Fuzzer