detach(): Reorganize code. Logic is the same.
detach(): Reorganize code. Logic is the same.

* strace.c (detach): Use goto's instead of excessive nesting.
Drop sigstop_expected and interrupt_done variables.

Signed-off-by: Denys Vlasenko <50fbbd36fe0f9c8261d4a3c762c8c29ffb35e48f@redhat.com>

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