Remove preg_index[] initializer.
Remove preg_index[] initializer.

(Logical change 1.84)

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