Bottle froze, has it lost alcohol percentage?

I took one pull off this plastic pint bottle of Captain Morgan Spiced rum last night and put it in the freezer not to expecting it to freeze. I barely came back to it tonight and it was frozen solid and a little flakey but not liquid, not even slush like. This picture doesn’t show much but it’s still fairly frozen but melting okay and it’s been thawing for approximately 30 minutes. I have never experienced this before and I’m wondering if after it melts will the potency or alcohol content has altered. I understand that it’s probably drastically changed texture and flavor but I don’t want to waste precious booze.