fix(long-polling): API changes require ignoring \ns!

src/flux/inbox-long-connection.coffee

@@ -120,6 +120,8 @@ class InboxLongConnection
         processBufferThrottled = _.throttle(@onProcessBuffer, 400, {leading: false})
         res.on 'close', => @retry()
         res.on 'data', (chunk) =>
+          # Ignore characters sent as pings
+          return if chunk is '\n'
           @_buffer += chunk
           processBufferThrottled()