bin: fix bogus variable type
bin: fix bogus variable type

The result of gst_iterator_find_custom() is not a GstIterator *.

mparis/gstreamer,ensonic/gstreamer,ensonic/gstreamer,centricular/gstreamer,magcius/gstreamer,mrchapp/gstreamer,krieger-od/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,krichter722/gstreamer,Distrotech/gstreamer,Distrotech/gstreamer,magcius/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,magcius/gstreamer,jpakkane/gstreamer,mrchapp/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,krichter722/gstreamer,centricular/gstreamer,lubosz/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,Lachann/gstreamer,lovebug356/gstreamer,ylatuya/gstreamer,lubosz/gstreamer,jpakkane/gstreamer,lovebug356/gstreamer,magcius/gstreamer,StreamUtils/gstreamer,drothlis/gstreamer,krieger-od/gstreamer,lubosz/gstreamer,mparis/gstreamer,justinjoy/gstreamer,cablelabs/gstreamer,mparis/gstreamer,mrchapp/gstreamer,Distrotech/gstreamer,mrchapp/gstreamer,drothlis/gstreamer,surround-io/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,collects/gstreamer,jpxiong/gstreamer,Distrotech/gstreamer,cfoch/gstreamer,collects/gstreamer,ahmedammar/platform_external_gst_gstreamer,lovebug356/gstreamer,krieger-od/gstreamer,drothlis/gstreamer,Distrotech/gstreamer,surround-io/gstreamer,lovebug356/gstreamer,Lachann/gstreamer,ahmedammar/platform_external_gst_gstreamer,cfoch/gstreamer,collects/gstreamer,Lachann/gstreamer,ylatuya/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,jpxiong/gstreamer,ylatuya/gstreamer,collects/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,cablelabs/gstreamer,lubosz/gstreamer,collects/gstreamer,krichter722/gstreamer,krieger-od/gstreamer,cfoch/gstreamer,jpakkane/gstreamer,jpxiong/gstreamer,mparis/gstreamer,ylatuya/gstreamer,ensonic/gstreamer,ensonic/gstreamer,drothlis/gstreamer,shelsonjava/gstreamer,surround-io/gstreamer,lubosz/gstreamer,cablelabs/gstreamer,shelsonjava/gstreamer,justinjoy/gstreamer,jpxiong/gstreamer,mrchapp/gstreamer,krichter722/gstreamer,lovebug356/gstreamer,drothlis/gstreamer,justinjoy/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,justinjoy/gstreamer,ahmedammar/platform_external_gst_gstreamer,cfoch/gstreamer,ensonic/gstreamer,cablelabs/gstreamer,ahmedammar/platform_external_gst_gstreamer,ylatuya/gstreamer,Lachann/gstreamer,StreamUtils/gstreamer,krieger-od/gstreamer,magcius/gstreamer,shelsonjava/gstreamer,ahmedammar/platform_external_gst_gstreamer,surround-io/gstreamer,jpxiong/gstreamer,Lachann/gstreamer