cairo: Always update texture after ClutterCairoTexture::draw
cairo: Always update texture after ClutterCairoTexture::draw

* clutter/clutter-cairo-texture.c (clutter_cairo_texture_emit_draw):
  Always update the Cogl texture after emitting ::draw, since we control
  the dynamic extent in which drawing should happen on the cairo_t.

  Fixes #677966.

jigpu/clutter,ebassi/clutter,collects/clutter,jigpu/clutter,GNOME/clutter,djdeath/clutter,collects/clutter,jigpu/clutter,djdeath/clutter,djdeath/clutter-android,Distrotech/clutter,djdeath/clutter,djdeath/clutter,jigpu/clutter,Distrotech/clutter,djdeath/clutter-android,heysion/clutter-clone,djdeath/clutter-android,heysion/clutter-clone,GNOME/clutter,GNOME/clutter,jigpu/clutter,Distrotech/clutter,djdeath/clutter,Distrotech/clutter,ebassi/clutter,collects/clutter,heysion/clutter-clone,ebassi/clutter,djdeath/clutter-android,ebassi/clutter,Distrotech/clutter,GNOME/clutter,collects/clutter,djdeath/clutter-android,heysion/clutter-clone,djdeath/clutter,jigpu/clutter,collects/clutter,GNOME/clutter,Distrotech/clutter,heysion/clutter-clone,ebassi/clutter