fix registry creation

Signed-off-by: jkoberg <jkoberg@owncloud.com>

changelog/unreleased/default-registry.md

@@ -3,3 +3,4 @@ Enhancement: Make nats-js-kv the default registry
 The previously used default `mdns` is faulty. Deprecated it together with `consul`, `nats` and `etcd` implementations.
 
 https://github.com/owncloud/ocis/pull/8011
+https://github.com/owncloud/ocis/pull/8027

ocis-pkg/registry/registry.go

@@ -119,7 +119,7 @@ func getEnvs(opts ...Option) *Config {
 		cfg.Type = s
 	}
 
-	if s := strings.Split(os.Getenv(registryAddressEnv), ","); len(s) > 0 {
+	if s := strings.Split(os.Getenv(registryAddressEnv), ","); len(s) > 0 && s[0] != "" {
 		cfg.Addresses = s
 	}