CVE-2023-27538: SSH connection too eager reuse still

## Summary: There's a check if SSH keys match between new and existing connection when considering reuse. This check is broken due to wrong comparison: `#define PROTO_FAMILY_SSH (CURLPROTO_SCP|CURLPROTO_SFTP)` ... `else if(get_protocol_family(needle->handler) == PROTO_FAMILY_SSH) {` This never matches as handler family is either `CURLPROTO_SCP` or `CURLPROTO_SFTP`. ## Remediation * Make the code: `else if(get_protocol_family(needle->handler) & PROTO_FAMILY_SSH) {` ## Steps To Reproduce: 1. Make two connections to the same host with different ssh keys ## Impact Connection reuse when different ssh keys are used.