Fix some media relay info issues
Review Request #1106 — Created Oct. 26, 2021 and submitted
GPtrArrayfor Jingle relay info
This is already used for relay info in the FarStream backend, so is probably the right change to make there.
- Fix possible leak when creating FarStream stream
The relay info is created before some early returns, but without being freed there. It can be created within a condition where it's really needed instead. Then telling the GValue to take it means we don't need to free it ourselves.