Use local variables in shell functions.

config/chroot_local-includes/usr/local/bin/tor-browser

@@ -33,12 +33,13 @@ tor_has_bootstrapped() {
 # Workaround bug #8036 by copying any localized search plugins into
 # the profile.
 enable_localized_searchplugins() {
-    TBB_LOCALE=$(cat /var/lib/tails-user-session/browser-locale.js | \
+    local locale
+    locale=$(cat /var/lib/tails-user-session/browser-locale.js | \
                  sed 's@^pref("general\.useragent\.locale", "\([^"]*\)");$@\1@')
-    if [ "${TBB_LOCALE}" = en-US ]; then
+    if [ "${locale}" = en-US ]; then
         return
     fi
-    PLUGIN_DIR="${TBB_INSTALL}"/distribution/searchplugins/locale/${TBB_LOCALE}
+    PLUGIN_DIR="${TBB_INSTALL}"/distribution/searchplugins/locale/${locale}
     if [ ! -e "${PROFILE}"/searchplugins ] && [ -d "${PLUGIN_DIR}" ]; then
         mkdir -p "${PROFILE}"/searchplugins
         # The plugins do not load if they are symlinks