controller: quick-fix compiler warning breaking the build
controller: quick-fix compiler warning breaking the build

This is likely not the proper fix.

https://bugzilla.gnome.org/show_bug.cgi?id=666890

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