tag RESPONSE_STATUS_ERRORS parsing fix

[Val S. <va...@nv...>]

Hi Robert,
   sorry for the flood of fixes but this particular problem annoyed me for a while, and I finally got around to it.  Attached is a fix for the above tag parsing that caused sporadic errors.  The reason was that the strtok_r delimiter argument is supposed to be a string, not a character address.  The same bug is also in another part of the same source (comma).  I also added line number printing to the error diagnostic.
Regards,
/Val