Increase fuzzing code coverage
Right now fuzzing covers just 33.5% of GnuTLS code lines (40% function coverage).
We should try to increase the coverage.
How to display the fuzz coverage:
./configure --disable-doc --enable-code-coverage
make clean
make
make -C fuzz check
make code-coverage-capture CODE_COVERAGE_IGNORE_PATTERN='*/include/* /home/tim/src/gnutls/gl/*'
xdg-open file:///home/tim/src/gnutls/GnuTLS-3.6.6-coverage/index.html