Get rid of some bogus checks.
Get rid of some bogus checks.

Greetings,

Attached patch is rather on the obvious side:
- rs1 can't be NULL since it's assigned on previous line
- rs_new never returns NULL, and if it ever did, we'd crash on memcpy that
  preceeds the NULL check.

Tested on Linux/x86_64 with no regressions.

Thanks,
--
Paul Pluzhnikov

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