Simplify get_scno_on_sysenter/sysexit
Simplify get_scno_on_sysenter/sysexit

* syscall.c (get_scno_on_sysenter): Remove "if (exiting(tcp))" code,
make "if (entering(tcp))" code unconditional.
(get_scno_on_sysexit): Remove "if (entering(tcp))" code,
make "if (exiting(tcp))" code unconditional.

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

lizh06/strace-plus,lizh06/strace-plus,MonkeyZZZZ/platform_external_strace,geekboxzone/mmallow_external_strace,android-ia/platform_external_strace,lizh06/strace-plus,Yu-AndroidM/android_external_strace,YUPlayGodDev/platform_external_strace,CyanogenMod/android_external_strace,geekboxzone/lollipop_external_strace,geofft/strace,MonkeyZZZZ/platform_external_strace,pgbovine/strace-plus,TeamExodus/external_strace,Saruta/strace,xin3liang/platform_external_strace,CyanogenMod/android_external_strace,lkundrak/strace,Distrotech/strace,vrastogi/strace,Distrotech/strace,MonkeyZZZZ/platform_external_strace,YUPlayGodDev/platform_external_strace,geekboxzone/mmallow_external_strace,YUPlayGodDev/platform_external_strace,xin3liang/platform_external_strace,AOSP-YU/platform_external_strace,bnoordhuis/strace,Saruta/strace,android-ia/platform_external_strace,bigzz/strace_android,AOSP-YU/platform_external_strace,Infinitive-OS/platform_external_strace,bnoordhuis/strace,DirtyUnicorns/android_external_strace,Andrey9kin/revisor,Yu-AndroidM/android_external_strace,cuviper/strace,lkundrak/strace,geekboxzone/mmallow_external_strace,Yu-AndroidM/android_external_strace,vrastogi/strace,cuviper/strace,kapdop/android_external_strace,MonkeyZZZZ/platform_external_strace,xin3liang/platform_external_strace,Infinitive-OS/platform_external_strace,CyanogenMod/android_external_strace,gcode-mirror/strace-plus,pgbovine/strace-plus,timmattison/strace-arm,gcode-mirror/strace-plus,DirtyUnicorns/android_external_strace,timmattison/strace-arm,Andrey9kin/revisor,jamel/strace-plus,AOSP-YU/platform_external_strace,YUPlayGodDev/platform_external_strace,geofft/strace,DirtyUnicorns/android_external_strace,bnoordhuis/strace,Saruta/strace,CyanogenMod/android_external_strace,cuviper/strace,pombredanne/strace,bigzz/strace_android,geekboxzone/mmallow_external_strace,bigzz/strace_android,gcode-mirror/strace-plus,Infinitive-OS/platform_external_strace,Yu-AndroidM/android_external_strace,lkundrak/strace,gcode-mirror/strace-plus,android-ia/platform_external_strace,CyanogenMod/android_external_strace,Infinitive-OS/platform_external_strace,pombredanne/strace,vrastogi/strace,kapdop/android_external_strace,TeamExodus/external_strace,pombredanne/strace,Andrey9kin/revisor,MonkeyZZZZ/platform_external_strace,TeamExodus/external_strace,DirtyUnicorns/android_external_strace,AOSP-YU/platform_external_strace,xin3liang/platform_external_strace,Yu-AndroidM/android_external_strace,jamel/strace-plus,geofft/strace,pgbovine/strace-plus,geekboxzone/lollipop_external_strace,jamel/strace-plus,geekboxzone/mmallow_external_strace,pombredanne/strace,geekboxzone/lollipop_external_strace,TeamExodus/external_strace,Distrotech/strace,cuviper/strace,jamel/strace-plus,Distrotech/strace,cuviper/strace,geekboxzone/lollipop_external_strace,kapdop/android_external_strace,kapdop/android_external_strace,geofft/strace,vrastogi/strace,Infinitive-OS/platform_external_strace,YUPlayGodDev/platform_external_strace,android-ia/platform_external_strace,android-ia/platform_external_strace,kapdop/android_external_strace,Saruta/strace,DirtyUnicorns/android_external_strace,Andrey9kin/revisor,lizh06/strace-plus,bigzz/strace_android,gcode-mirror/strace-plus,timmattison/strace-arm,lkundrak/strace,lizh06/strace-plus,geofft/strace,bnoordhuis/strace,bigzz/strace_android,jamel/strace-plus,AOSP-YU/platform_external_strace,geekboxzone/lollipop_external_strace,TeamExodus/external_strace,pgbovine/strace-plus,pgbovine/strace-plus,Saruta/strace,Distrotech/strace,vrastogi/strace