Bug 40951: Copy tor-browser.ftl to the right directory on macOS.

While we store our Japanese translation in ja, on macOS we need to move
the file to the ja-JP-mac directory.

projects/firefox/build

@@ -134,7 +134,7 @@ mkdir "$HOME/.mozbuild"
           lang="ja"
         fi
       [% END -%]
-      mv "$transl_tor_browser/$lang/tor-browser.ftl" "$l10ncentral/$lang/browser/browser/"
+      mv "$transl_tor_browser/$lang/tor-browser.ftl" "$l10ncentral/$central_lang/browser/browser/"
       mv "$transl_tor_browser/$lang/cryptoSafetyPrompt.properties" "$l10ncentral/$central_lang/browser/chrome/browser/"
       mv "$transl_tor_browser/$lang" "$torbutton_locales/"
       echo "% locale torbutton $lang %locale/$lang/" >> "$torbutton_jar"