If it's a minor error that I can't fix myself due to rep, I'll leave a comment on the question/answer noting the error and someone will usually fix it pretty quickly. I do this whether I've edited it or not if the change is really small. I try to check back when I see the question edited and remove my comment after the edit is done, too... just to keep things neat.
If you edit and then see some other errors and you can get over the edit character threshold by making legitimate corrections, I wouldn't worry too much about people calling you out as a "rep-whore" unless you do it repeatedly over the course of a few posts or edit the same thing several times.
To help avoid this, I strongly recommend a final once-over to make sure everything looks good before submitting the edit... though, since I have edit privileges on some sites and not others, I fall into this trap on the sites I don't have the privilege on from time to time.