Upper Wind Shield area

In my 72 I had a bit of water damage under the windshield header trim, the piece that the rear view mirror connects under.  I used a wire brush on a drill to remove any rust that was there and just painted it with some primer to seal it up.  The rust wasn't too bad, and that was a quick fix solution for the time.  I don't think that area on my car was bad enough to think there would be any structural damage, or concern.