Fix bashism in firewall-drop.sh #1572
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The PR in #1099 introduced a bash-ism in
firewall-drop.shwhich causes that command's use in active-response to fail to execute on systems where/bin/shis not bash (e.g Debian, where it's a symlink to /bin/dash).Bash understands
==in a conditional, but not sh or dash. The error seen is:This PR changes it to
=which is understood by both bash and dash.