Fix *xattr decoding
Fix *xattr decoding

* file.c (print_xattr_val): Do not attempt to decode a zero sized array.
Fixes RH#885233.

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