jitsi-meet-tokens.postinst: fix tests

debian/jitsi-meet-tokens.postinst

                 PRTRUNK_INSTALL_CHECK="$(dpkg-query -f '${Status}' -W 'prosody-trunk' 2>/dev/null | awk '{print $3}' || true)"
                 PR_VER_INSTALLED=$(dpkg-query -f='${Version}\n' --show prosody  2>/dev/null || true)
                 if [ "$PR10_INSTALL_CHECK" = "installed" ] \
-                    || "$PR10_INSTALL_CHECK" = "unpacked"  \
-                    || "$PRTRUNK_INSTALL_CHECK" = "installed"  \
-                    || "$PRTRUNK_INSTALL_CHECK" = "unpacked"  \
+                    || [ "$PR10_INSTALL_CHECK" = "unpacked" ] \
+                    || [ "$PRTRUNK_INSTALL_CHECK" = "installed" ] \
+                    || [ "$PRTRUNK_INSTALL_CHECK" = "unpacked" ] \
                     || dpkg --compare-versions "$PR_VER_INSTALLED" lt "0.11" ; then
                     sed -i 's/module:hook_global(/module:hook(/g' /usr/share/jitsi-meet/prosody-plugins/mod_auth_token.lua
                 fi