OSV-2020-389 Use-of-uninitialized-value in smtp_state_ehlo_resp

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=16918 Crash type: Use-of-uninitialized-value Crash state: smtpstateehloresp smtpstatemachact Curlppstatemach...