Last message correction doesn't work correctly with HTTP upload
Gajim 1.2.0, Arch Linux, nbxmpp 1.0.2
How to reproduce:
- Write a message in a private MUC
- Upload a photo using HTTP Upload
- Try to correct the last message
correction is impossible or the photo upload is corrected
correction shows the message from step 1 as being corrected. Since this message can't be corrected, it's sent as a new message.