'pkg install -Rf perl' wants to reinstall pkg

[bdrewery]

This is similar to #528

# pkg install -Rf perl
Updating repository catalogue
digests.txz                                                                                                                                      100%   54KB  54.2KB/s  54.2KB/s   00:00
packagesite.txz                                                                                                                                  100%  314KB 314.5KB/s 314.5KB/s   00:00
Incremental update completed, 0 packages processed:
0 packages updated, 0 removed and 0 added.
New version of pkg detected; it needs to be installed first.
After this upgrade it is recommended that you do a full upgrade using: 'pkg upgrade'

The following 1 packages will be installed:

        Reinstalling pkg-1.1.3_1

0 B to be downloaded

Proceed with installing packages [y/N]: n