Handle error return from is_signal_frame
Handle error return from is_signal_frame

vegard/libunwind,mpercy/libunwind,geekboxzone/mmallow_external_libunwind,zeldin/platform_external_libunwind,fdoray/libunwind,tony/libunwind,zliu2014/libunwind-tilegx,atanasyan/libunwind,ehsan/libunwind,lat/libunwind,evaautomation/libunwind,geekboxzone/lollipop_external_libunwind,tronical/libunwind,pathscale/libunwind,rantala/libunwind,krytarowski/libunwind,rantala/libunwind,0xlab/0xdroid-external_libunwind,atanasyan/libunwind-android,yuyichao/libunwind,android-ia/platform_external_libunwind,dreal-deps/libunwind,adsharma/libunwind,atanasyan/libunwind,Keno/libunwind,adsharma/libunwind,olibc/libunwind,DroidSim/platform_external_libunwind,android-ia/platform_external_libunwind,zeldin/platform_external_libunwind,vtjnash/libunwind,tkelman/libunwind,rantala/libunwind,ehsan/libunwind,jrmuizel/libunwind,CyanogenMod/android_external_libunwind,androidarmv6/android_external_libunwind,rogwfu/libunwind,dagar/libunwind,geekboxzone/lollipop_external_libunwind,dagar/libunwind,SyndicateRogue/libunwind,DroidSim/platform_external_libunwind,Keno/libunwind,evaautomation/libunwind,rogwfu/libunwind,djwatson/libunwind,joyent/libunwind,jrmuizel/libunwind,adsharma/libunwind,igprof/libunwind,vegard/libunwind,0xlab/0xdroid-external_libunwind,krytarowski/libunwind,geekboxzone/mmallow_external_libunwind,igprof/libunwind,wdv4758h/libunwind,yuyichao/libunwind,igprof/libunwind,atanasyan/libunwind-android,krytarowski/libunwind,dropbox/libunwind,dreal-deps/libunwind,cms-externals/libunwind,wdv4758h/libunwind,frida/libunwind,androidarmv6/android_external_libunwind,cms-externals/libunwind,DroidSim/platform_external_libunwind,androidarmv6/android_external_libunwind,CyanogenMod/android_external_libunwind,frida/libunwind,fillexen/libunwind,cloudius-systems/libunwind,cloudius-systems/libunwind,unkadoug/libunwind,wdv4758h/libunwind,project-zerus/libunwind,joyent/libunwind,ehsan/libunwind,rntz/libunwind,bo-on-software/libunwind,android-ia/platform_external_libunwind,joyent/libunwind,Chilledheart/libunwind,geekboxzone/lollipop_external_libunwind,zeldin/platform_external_libunwind,maltek/platform_external_libunwind,dagar/libunwind,0xlab/0xdroid-external_libunwind,lat/libunwind,vtjnash/libunwind,tkelman/libunwind,unkadoug/libunwind,mpercy/libunwind,pathscale/libunwind,geekboxzone/mmallow_external_libunwind,Keno/libunwind,mpercy/libunwind,bo-on-software/libunwind,bo-on-software/libunwind,frida/libunwind,tony/libunwind,libunwind/libunwind,jrmuizel/libunwind,Chilledheart/libunwind,tronical/libunwind,vtjnash/libunwind,maltek/platform_external_libunwind,rntz/libunwind,martyone/libunwind,cms-externals/libunwind,rntz/libunwind,CyanogenMod/android_external_libunwind,atanasyan/libunwind-android,libunwind/libunwind,tkelman/libunwind,yuyichao/libunwind,tronical/libunwind,djwatson/libunwind,lat/libunwind,Chilledheart/libunwind,pathscale/libunwind,martyone/libunwind,project-zerus/libunwind,cloudius-systems/libunwind,dropbox/libunwind,vegard/libunwind,olibc/libunwind,fillexen/libunwind,SyndicateRogue/libunwind,tony/libunwind,unkadoug/libunwind,SyndicateRogue/libunwind,martyone/libunwind,rogwfu/libunwind,evaautomation/libunwind,atanasyan/libunwind,olibc/libunwind,dropbox/libunwind,libunwind/libunwind,zliu2014/libunwind-tilegx,fillexen/libunwind,maltek/platform_external_libunwind,fdoray/libunwind,zliu2014/libunwind-tilegx,project-zerus/libunwind,fdoray/libunwind,dreal-deps/libunwind,djwatson/libunwind