Fix the wrong extra ref for GstMemory causing a gralloc leak
Fix the wrong extra ref for GstMemory causing a gralloc leak

Use gst_buffer_peek_memory instead of gst_buffer_get_memory since it
does not increment the memory reference count. We don't need to worry
since we hold an extra buffer reference anyway.

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