Error when reloading project with proxied files
Steps to reproduce:
- Load a project with proxied files, click "back",
- load it again, notice in the console:
0:04:42.764340959 3 0x1a528f0 ERROR ges-asset ges-asset.c:757:ges_asset_set_proxy:GESUriClipAsset@0x1a41e30 Trying to use file:///home/aleb/masina/FILMULETE%20UNIFY-ER/Turn%20On%20The%20Gas.m4a.170482.proxy.mkv as a proxy, but it is already proxying file:///home/aleb/masina/FILMULETE%20UNIFY-ER/Turn%20On%20The%20Gas.m4a
We should unproxy all the assets when a project is closed?