queue2: release queue2 lock before notify
queue2: release queue2 lock before notify

Make sure that we don't hold the lock when we notify the temp-location
property,

Fixes #631853

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