#186 openAuth crashed when going to be closed and then press the cancel button #250
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PR Checklist
What is the current behavior?
openAuth crashed when going to be closed and then press the cancel button.
The completionHandler was called, then redirectResolve to be null by flowDidFinish. After that completionHandler be call again by press the cancel button.
redirectResolve is null, and so crash.
What is the new behavior?
No more crash.
Fixes/Implements/Closes #186.