False positive in missing_package_linter for symbol

[MichaelChirico]

lintr::lint("loadNamespace(package)\n", lintr::missing_package_linter())

lints:

<text>:1:1: warning: Package 'package' is not installed.
loadNamespace(package)
^~~~~~~~~~~~~~~~~~~~~~

As seen in our own code:

lintr/R/with.R

Line 112 in 36236c3

pkg_ns <- loadNamespace(package)