iterator: Properly copy mutexes around when creating a copy of a filter iterator
iterator: Properly copy mutexes around when creating a copy of a filter iterator

centricular/gstreamer,cablelabs/gstreamer,mparis/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,krichter722/gstreamer,jpakkane/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,jpxiong/gstreamer,shelsonjava/gstreamer,jpxiong/gstreamer,krichter722/gstreamer,jpakkane/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,cablelabs/gstreamer,jpakkane/gstreamer,ensonic/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,mparis/gstreamer,surround-io/gstreamer,cablelabs/gstreamer,centricular/gstreamer,mparis/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,cfoch/gstreamer,ensonic/gstreamer,ensonic/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,krichter722/gstreamer,cfoch/gstreamer,Lachann/gstreamer,surround-io/gstreamer,krichter722/gstreamer,Lachann/gstreamer,Lachann/gstreamer,mparis/gstreamer,Lachann/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,jpxiong/gstreamer,shelsonjava/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,Lachann/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,ensonic/gstreamer,cablelabs/gstreamer,cablelabs/gstreamer,ensonic/gstreamer,jpxiong/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,mparis/gstreamer