Fix static analysis failures

src/freedombone-app-tox

     set_repo_commit "$INSTALL_DIR/toxcore" "toxcore commit" "$TOXCORE_COMMIT" $TOXCORE_REPO
     if [[ $(commit_has_changed "$INSTALL_DIR/toxcore" "toxcore commit" "$TOXCORE_COMMIT") == "1" ]]; then
         cd "$INSTALL_DIR/toxcore" || exit 53683563
-        sed -i 's|ExecStart=.*|ExecStart=/usr/local/bin/tox-bootstrapd --config /etc/tox-bootstrapd.conf|g' $rootdir/etc/systemd/system/tox-bootstrapd.service
+        sed -i 's|ExecStart=.*|ExecStart=/usr/local/bin/tox-bootstrapd --config /etc/tox-bootstrapd.conf|g' "$rootdir/etc/systemd/system/tox-bootstrapd.service"
         autoreconf -i
         ./configure --enable-daemon
         make