Eliminate one heap allocation in dwarf_find_debug_frame()
Eliminate one heap allocation in dwarf_find_debug_frame()

Allocate `tab' from stack in dwarf_find_debug_frame(), as it's only a
few members and we only need it locally in the function.

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