json BUGFIX logging info about unexpected character in JSON data
json BUGFIX logging info about unexpected character in JSON data

There were several cases when an invalid character was detected and
reported via error return code, but the error message was not logged.

sartura/libyang,sartura/libyang,sartura/libyang,sartura/libyang,sartura/libyang,CESNET/libyang,sartura/libyang,CESNET/libyang