print-telnet: variable 'length' is updated and the new value is never used
print-ppp: variable 'length' is updated and the new value is never used
Merge pull request #372 from fxlb/print-telnet

print-telnet: variable 'length' is updated, the new value is never used
Merge pull request #373 from fxlb/print-ppp

print-ppp: variable 'length' is updated and the new value is never used