buffer: fix _resize better
buffer: fix _resize better

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