fix: in ickP2PSendMsg the JSON char array was printed to the console wit...

fix: in ickP2PSendMsg the JSON char array was printed to the console without being properly 0-terminated.
As a result typically some harmless garbage was printed after the actual JSON, but regularly we got beeps from the console, when ASCII-10 was printed coincidently.

Regular beeps are not good for a linux based player :)