plugin loader: Don't crash on bogus plugin details
plugin loader: Don't crash on bogus plugin details

When invalid registry chunks are received from the child, and parsing
fails, don't access an invalid plugin pointer. Instead attempt to
figure out which plugin caused the problem and blacklist it.

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