Synchronet now requires the libarchive development package (e.g. libarchive-dev on Debian-based Linux distros, libarchive.org for more info) to build successfully.

Fix crashing bug introduced in previous commit of this file

Don't pass NULL to strcasestr().
5 jobs for master in 9 minutes and 52 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Build
passed #1881
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sbbs-linux

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sbbs-windows

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sexpots-linux

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sexpots-windows

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passed #1883
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syncterm-linux

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