Fix segfault when config is nil

hashicorp / vault-plugin-secrets-azure

Vault Azure Secrets plugin

Mozilla Public License 2.0

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Fix segfault when config is nil #75

Closed jasonodonnell closed 3 years ago

jasonodonnell commented 3 years ago

If config is nil (backend is enabled but not yet configured), the periodic function will fail because it does not check if the config is nil. Added a guard and a test to cover this case.