At page 118, Listing 6.2, the following code is appears for the very FIRST time:
mIsCheater = false;
This code is not shown anywhere in previous chapter (5). In particular, it should appear in Listing 5.15 or later, where the member variable mIsCheater is introduced.
This code is found on the Solutions you can download. However, this errata is not listed in the Errata post, so it would be great to update it to include this.
Hope I’m right