1. If enabled: the variable must be exported to the env to take effect;
2. Upon reflection: disable this feature:
tshark has been changed to output WARNING messages to stderr as a
default; This means that DISSECTOR_BUGs and failed DISSECTOR_ASSERTs
which cause WARNING log level messages will thus be output to stderr and
thus will be detected by the fuzz-test.
svn path=/trunk/; revision=29330
d6925b130e