1991 Rear Drive Hub and Water

Tonight I was messing around with the 91's rear drive hub and cleaning up the brake caliper. I reinstalled the drive chain and when I backed off the rear hub's large pinch Bolt I noticed a small pool of water under the hub. It looks like there was a little water trapped between the drive hub and the swingarm assembly. I have to assume this water is from sitting outside a long time or from pressure washing. Has anyone seen water drip out of their drive hub area when they were adjusting their chain?
I left everything loose for the night to drip or air out. What are members thoughts?, should it be alright after it dries out or do I need to remove the rear drive hub from the swingarm and check it out?

 

I learned along time ago not to use a power wash (car wash) on my bike. It drove detergent into rear axle bolt on the 83, making it almost impossible to remove.