correct usage of gtk_arg_copy
correct usage of gtk_arg_copy

Original commit message from CVS:
correct usage of gtk_arg_copy

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