Add GCC/clang harderning flags + Minor bugfixes (possible memleak and NULL dereferences) + Update dockers (mbedtls / binutils)
- Add GCC / clang hardening flags
- Update build docker for mbedtls 2.16.10 and binutils 2.36.1
- Fix possible memory leaks and NULL dereferences fixes raised by -fanalyzer GCC option
Edited by Vincent Monfort