When the existing array _renewStates is cast as a string (at the string.prototype.split() function or possibly in earlier code), that existing array is represented as "A String, representing the values of the array, separated by a comma" [quote source](https://www.w3schools.com/jsref/jsref_tostring_array.asp).
This update replaces the incorrect semi-colon separator with the correct comma separator. Without a correction, it is possible to encounter issues such as token renewal timeout or token renewal silent failure. Testing included turning on logging in adal-angular.js to observe changes.
petkir
Hugo Bernier
Sylvia Okafor
Joel Rodrigues
Kirsten
Waldek Mastykarz
Vesa Juvonen