Okay so today I bought a rear cxp22/formula rear wheel for $30 off craiglist. It seemed like a killer deal, it had been used for around a year, the hub was in good condition and wheel was properly tensioned/trued. As i was changing the rim tape I noticed that there was a small 'crack' along one side of the rim joint. By crack I mean that if I hold it up to a light I can see a hair-thin opening along the joint, starting from the from the outermost ledge to around 4mm into the rim.

So for this little segment the walls of the rim arent touching. I did some research and read that this kind of issue dosent matter since the spokes hold the rim together etc. but I want to make sure before I start using it. Would it be better to just resell or does this wheel probably still have a lot of life in it? It seems really sturdy, I just want to know if the rim will unexpectedly crack on me haha. Thanks