41d436e56e
When tunneling over HTTP, if connection on the second channel happens before the control timer is created we may trigger an assert in rtsp_ctrl_timeout_remove(). Avoid that by taking the priv->lock before attaching the client thread to the context. Fixes #1025 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1867>