GstPlugin: fix compilation if both HAVE_WIN32 and HAVE_SIGACTION are defined
GstPlugin: fix compilation if both HAVE_WIN32 and HAVE_SIGACTION are defined

Move _gst_plugin_fault_handler_is_setup into the ifdef block where it's
used. Fixes #578201.

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