firefox-esr removed by pkg, cannot build firefox-esr from ports

[Antonio Olivares]

Dear folks,

The title says it all.  I ran
# pkg update
# pkg upgrade
and I did not realize that it would remove firefox-esr till it was too
late. I typed y and applied the damage.  Now I cannot get firefox-esr
back.  The pkg command does not find firefox-esr and I ran
# portsnap fetch extract
# portsnap fetch update
and went into /usr/ports/www/firefox-esr
and ran
# make install clean
and I get errors from rust.  I believed that firefox-esr was (rustless
firefox) not anymore :(