net/liveMedia: update to 2020.01.23

2020.01.23:

• Removed stray characters that had been accidentally left in "mikeyParse.cpp" (in "testProgs")

2020.01.22:

• Fixed a bug in the "TLSState" constructor (some fields were not initialized properly). (Thanks to Horst Possegger for reporting this.)
• Updated the "mikeyParse" demo application to properly parse the "Key validity" section of a "Key Data" sub-payload.