Coverity complains about likely NPE in zycore

I just pulled a recent zydis (4d4fe4c293c5438f32688b14b29017ae3f48369e) into Firefox. We run Coverity in the background on everything, and Coverity throws up a potential problem in zycore, the report is here: https://phabricator.services.mozilla.com/D59915#inline-364191. I have not tried to substantiate whether this is an actual problem, and we don't ship zydis in release builds so it's not a security issue for us, but perhaps you want to look into it.