basesink: fixes compiler warning
basesink: fixes compiler warning

gstbasesink.c: In function 'gst_base_sink_chain_unlocked':
gstbasesink.c:3204: warning: 'ret' may be used uninitialized in this function

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