simplify gst_droidcamsrc_copy_buffer a bit
simplify gst_droidcamsrc_copy_buffer a bit

sledges/gst-droid,sledges/gst-droid,mlehtima/gst-droid,foolab/gst-droid,foolab/gst-droid,mlehtima/gst-droid,sledges/gst-droid,sailfishos/gst-droid