basetransform: avoid a caps-copy
basetransform: avoid a caps-copy

We can simply truncate the caps, as 'othercaps' is the result of intersect
operations and thus ours and writable.

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