resolvesThis should override previous throws

[noisecapella]

Purpose (TL;DR) - mandatory

Fixed missing reset of exceptionCreator for resolvesThis which exists in other similar functions. Where exception is set to undefined exceptionCreator should also be set to `undefined.

How to verify - mandatory

In the branch, remove the change to default-behaviors.js and run the tests. One of the two new tests should fail, showing that the previous behavior is inconsistent regarding how throws affects resolveThis.

Checklist for author

• npm run lint passes
• References to standard library functions are cached.

[mroderick]

Thank you 👍

[mroderick]

This was released with sinon@3.2.1