spurious warning in pairs.stanfit

[bbolker]

In pairs.stanfit, on this line we have

usr <- par("usr"); on.exit(par(usr))

this throws a warning (" argument 1 does not name a graphical parameter") ; the on.exit() statement should (I think) be on.exit(par(usr = usr)).

Happy to submit a PR if requested.

[jgabry]

Yes, thanks! I'm not sure how this hasn't come up before, but I think you're right.