Name and Version

bitnami/harbor 24.0.2

What architecture are you using?

amd64

What steps will reproduce the bug?

1. Run helm template --set registry.secret=0123456789abcdef harbor-24.0.2.tgz | grep REGISTRY_HTTP_SECRET
2. The result is PG5pbD4=, when decoded equals <nil>

Are you using any custom parameters or values?

Yes, I'm overriding the registry.secret value (but I'm not assigning the registry.existingSecret value)

See "steps to reproduce" above.

What is the expected behavior?

The Secret created should include a key REGISTRY_HTTP_SECRET with the value provided in the override

What do you see instead?

PG5pbD4=, when decoded equals <nil>

Additional information

It looks like this bug was introduced by the fix for #29372, where the following lines cause the current problem:

{{- $registryHttpSecret := $existingEnvVarsSecretRegistry.REGISTRY_HTTP_SECRET }}
{{- if eq $registryHttpSecret "" }}

If there is no existing secret, then $registryHttpSecret will be null, but the if statement checks for the empty string, which is not the same thing.