If you check the edges of the fillet, and it is tight to the glass, with no areas lifting, it should be fine. However, it is up to you. An inner reseal may not help a tank that has a bad butt joint, which would cause the tank to come apart. Those types of failures are very rare, but do happen. For what it is worth, I have the first tank I ever built,from around 1968, that still holds water even though I have it drained for a reseal. The fillet has released from the panes and it is time. The butt joints are terrible, full of air bubbles, and yet the tank is still together after 45 years and still doesn't leak.
Join a fish club. Don't have one in your area? Start one.