Fix issue with token refresh

[arvindkrishnakumar-okta]

Issue(s)

Description

Presently, we're setting the token to null before trying to refresh. If the refresh token fails for some reason, then due to the conditional check for token (token != null), the refresh won't be re-tried again. With this PR, we're fixing this by avoiding setting it to null before the refresh attempt.

Category

• Bugfix
• Enhancement
• New Feature
• Library Upgrade
• Configuration Change
• Versioning Change
• Unit or Integration Test(s)
• Documentation

Signoff

• I have submitted a CLA for this PR
• Each commit message explains what the commit does
• I have updated documentation to explain what my PR does
• My code is covered by tests if required
• I did not edit any automatically generated files