gst-renderer: Create widget before connecting signals
gst-renderer: Create widget before connecting signals

Create the widget before connecting handlers to it's signals.

GNOME/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,jku/rygel,Pelagicore/Media-Manager-Rygel-patched,Tarnyko/rygel,jku/rygel,Tarnyko/rygel,GNOME/rygel,Pelagicore/Media-Manager-Rygel-patched,luisbg/rygel