gnutls: Use-of-uninitialized-value in mpz_import

Project: https://gitlab.com/gnutls/gnutls.git Detailed report: https://oss-fuzz.com/testcase?key=5790636118638592 Project: gnutls Fuzzer: libFuzzergnutlssrpclientfuzzer Fuzz target binary: gnutlssrpclientfuzzer Job Type: libfuzzermsangnutls Platform Id: linux Crash Type: Use-of-uninitialized-valu...