pkg doesn't clean up and leaves the temporary directory on failure

[yurivict]

I was experimenting with one new port and there was a symlink /usr/local/lib/lean/Std present in place where pkg was installing the package's directory.

Here is what pkg printed:

===>   Registering installation for lean4-std-4.5.0.r1
Installing lean4-std-4.5.0.r1...
pkg-static: Fail to rename /usr/local/lib/lean/.pkgtemp.Std.LWOrsb0zC50H -> /usr/local/lib/lean/Std:Not a directory
*** Error code 1

The directory /usr/local/lib/lean/.pkgtemp.Std.LWOrsb0zC50H was left.

pkg should clean up temporary files/directories when some failure prevents it from proceeding.

pkg-1.20.9
FreeBSD 14.0