test: fix ghostpad test
test: fix ghostpad test

We need to have activated pads before we can pass around caps.
Don't set NULL caps on pads.

ensonic/gstreamer,Lachann/gstreamer,lovebug356/gstreamer,lubosz/gstreamer,justinjoy/gstreamer,lubosz/gstreamer,lovebug356/gstreamer,collects/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,cfoch/gstreamer,cablelabs/gstreamer,StreamUtils/gstreamer,mparis/gstreamer,justinjoy/gstreamer,jpxiong/gstreamer,cablelabs/gstreamer,krichter722/gstreamer,mparis/gstreamer,StreamUtils/gstreamer,surround-io/gstreamer,jpakkane/gstreamer,surround-io/gstreamer,cfoch/gstreamer,krieger-od/gstreamer,jpakkane/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,centricular/gstreamer,cfoch/gstreamer,collects/gstreamer,jpxiong/gstreamer,jpakkane/gstreamer,krichter722/gstreamer,ensonic/gstreamer,surround-io/gstreamer,mparis/gstreamer,Lachann/gstreamer,ensonic/gstreamer,mparis/gstreamer,krieger-od/gstreamer,centricular/gstreamer,jpxiong/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,mparis/gstreamer,Lachann/gstreamer,krieger-od/gstreamer,shelsonjava/gstreamer,lubosz/gstreamer,cfoch/gstreamer,surround-io/gstreamer,ensonic/gstreamer,surround-io/gstreamer,krichter722/gstreamer,krichter722/gstreamer,lovebug356/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,cfoch/gstreamer,jpakkane/gstreamer,collects/gstreamer,cablelabs/gstreamer,centricular/gstreamer,lubosz/gstreamer,collects/gstreamer,cablelabs/gstreamer,ensonic/gstreamer,jpxiong/gstreamer,Lachann/gstreamer,lovebug356/gstreamer,Lachann/gstreamer,StreamUtils/gstreamer,StreamUtils/gstreamer,lovebug356/gstreamer,StreamUtils/gstreamer,jpxiong/gstreamer,cablelabs/gstreamer,justinjoy/gstreamer,collects/gstreamer,lubosz/gstreamer