TLS: fix parsing of certificate elements #1910
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```
==1228==ERROR: AddressSanitizer: SEGV on unknown address 0x6040000bed05 (pc 0x00000056e148 bp 0x7ffcca534320 sp 0x7ffcca5330c0 T0)
==1228==The signal is caused by a WRITE memory access.
#0 0x56e148 in processCertificateElements ndpi/src/lib/protocols/tls.c:682:79
ntop#1 0x56c60f in LLVMFuzzerTestOneInput ndpi/fuzz/fuzz_tls_certificate.c:43:3
ntop#2 0x43de63 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
ntop#3 0x4295c2 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:324:6
ntop#4 0x42ee6c in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:860:9
ntop#5 0x4583a2 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
ntop#6 0x7f8c021c9082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/libc-start.c:308:16
ntop#7 0x41f78d in _start
```
Found by oss-fuzz.
See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57317
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utoni
approved these changes
Mar 22, 2023
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Found by oss-fuzz.
See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=57317