unwind: fix a bug in range updating of binary search
unwind: fix a bug in range updating of binary search

* unwind.c (print_stacktrace): Fix off-by-one error in binary search.

Signed-off-by: Masatake YAMATO <bdfff7006d3a5967c7c741d652a74f5445442e11@redhat.com>
Signed-off-by: Luca Clementi <d57344494c7269af581541ed6a8add475bffdfcf@gmail.com>

Infinitive-OS/platform_external_strace,CyanogenMod/android_external_strace,TeamExodus/external_strace,vrastogi/strace,Yu-AndroidM/android_external_strace,geekboxzone/mmallow_external_strace,MonkeyZZZZ/platform_external_strace,Distrotech/strace,vrastogi/strace,DirtyUnicorns/android_external_strace,bnoordhuis/strace,vrastogi/strace,lkundrak/strace,geekboxzone/mmallow_external_strace,Infinitive-OS/platform_external_strace,Infinitive-OS/platform_external_strace,cuviper/strace,geekboxzone/mmallow_external_strace,DirtyUnicorns/android_external_strace,cuviper/strace,vrastogi/strace,AOSP-YU/platform_external_strace,CyanogenMod/android_external_strace,geekboxzone/lollipop_external_strace,kapdop/android_external_strace,bigzz/strace_android,Yu-AndroidM/android_external_strace,kapdop/android_external_strace,geekboxzone/lollipop_external_strace,bigzz/strace_android,kapdop/android_external_strace,android-ia/platform_external_strace,cuviper/strace,MonkeyZZZZ/platform_external_strace,geofft/strace,AOSP-YU/platform_external_strace,MonkeyZZZZ/platform_external_strace,TeamExodus/external_strace,YUPlayGodDev/platform_external_strace,Yu-AndroidM/android_external_strace,cuviper/strace,TeamExodus/external_strace,Distrotech/strace,MonkeyZZZZ/platform_external_strace,geofft/strace,AOSP-YU/platform_external_strace,geekboxzone/lollipop_external_strace,android-ia/platform_external_strace,AOSP-YU/platform_external_strace,Yu-AndroidM/android_external_strace,xin3liang/platform_external_strace,Saruta/strace,DirtyUnicorns/android_external_strace,Saruta/strace,xin3liang/platform_external_strace,vrastogi/strace,YUPlayGodDev/platform_external_strace,AOSP-YU/platform_external_strace,CyanogenMod/android_external_strace,geofft/strace,bnoordhuis/strace,Infinitive-OS/platform_external_strace,kapdop/android_external_strace,Saruta/strace,lkundrak/strace,geofft/strace,cuviper/strace,geekboxzone/mmallow_external_strace,TeamExodus/external_strace,MonkeyZZZZ/platform_external_strace,xin3liang/platform_external_strace,android-ia/platform_external_strace,android-ia/platform_external_strace,DirtyUnicorns/android_external_strace,xin3liang/platform_external_strace,lkundrak/strace,Distrotech/strace,bigzz/strace_android,Distrotech/strace,geekboxzone/lollipop_external_strace,android-ia/platform_external_strace,Yu-AndroidM/android_external_strace,YUPlayGodDev/platform_external_strace,YUPlayGodDev/platform_external_strace,YUPlayGodDev/platform_external_strace,Saruta/strace,geofft/strace,lkundrak/strace,bigzz/strace_android,TeamExodus/external_strace,Infinitive-OS/platform_external_strace,kapdop/android_external_strace,bnoordhuis/strace,CyanogenMod/android_external_strace,geekboxzone/mmallow_external_strace,Saruta/strace,bigzz/strace_android,DirtyUnicorns/android_external_strace,geekboxzone/lollipop_external_strace,Distrotech/strace,CyanogenMod/android_external_strace,bnoordhuis/strace