Memory leak

[TheRealMal]

Bug report criteria

• [X] This bug report is not security related, security issues should be disclosed privately via etcd maintainers.
• [X] This is not a support request or question, support requests or questions should be raised in the etcd discussion forums.
• [X] You have read the etcd bug reporting guidelines.
• [X] Existing open issues along with etcd frequently asked questions have been checked and this is not a duplicate.

What happened?

file is being opened here https://github.com/etcd-io/etcd/blob/9914047acb5c679531f644d9c81718fcd85a3108/client/v3/snapshot/v3_snapshot.go#L63

but being closed only here https://github.com/etcd-io/etcd/blob/9914047acb5c679531f644d9c81718fcd85a3108/client/v3/snapshot/v3_snapshot.go#L87

Between these lines errors can be occured and file won't be closed

What did you expect to happen?

There should close function invocation via defer

How can we reproduce it (as minimally and precisely as possible)?

Check code

Anything else we need to know?

Etcd version (please run commands below)

latest

Etcd configuration (command line flags or environment variables)

Etcd debug information (please run commands below, feel free to obfuscate the IP address or FQDN in the output)

Relevant log output

-