I would cautiously apply channelock pliers to close the gap, as per [MENTION=319010]Narhay[/MENTION] in other thread. Clamp the dropout gently (sandwich) to prevent any skewing. Perhaps put a spare axle in the slot as gauge. Just make sure to not mis-align the drops in other directions. Check the width or spread on the rear dropouts with the OLD of the hub to make sure its a good fit.
This should be any easy repair.