The VENDOR line did not have a proper ID, so scanning the full line
failed and the "yyextra->vendor_name" was not freed. Import the current
version from FreeRadius to fix this problem.
(Since the attributes are now grouped by the vendor, the conflict
comment no longer applies.)
Change-Id: Id6020c0a5f34c624aedbb0acebe70dc643402e41
Reviewed-on: https://code.wireshark.org/review/20312
Reviewed-by: Michael Mann <mmann78@netscape.net>