for spelling attach error handler first

services/web/app/coffee/Features/Spelling/SpellingController.coffee

@@ -8,7 +8,7 @@ module.exports = SpellingController =
 		url = "/user/#{req.session.user._id}#{url}"
 		req.headers["Host"] = Settings.apis.spelling.host
 		getReq = request(url: Settings.apis.spelling.url + url, method: req.method, headers: req.headers, json: req.body)
-		getReq.pipe(res)
 		getReq.on "error", (error) ->
 			logger.error err: error, "Spelling API error"
 			res.sendStatus 500
+		getReq.pipe(res)