Print at least one space between SYSCALL(ARGS) and = RESULT if tracee is killed
Print at least one space between SYSCALL(ARGS) and = RESULT if tracee is killed

We already do it in the normal case, but in rare code path where
tracee is gone (SIGKILLed?) sometimes we were printing this:
"SYSCALL(ARGS <unavailable>)= ? <unavailable>" - note jammed together ")=".
test/sigkill_rain.c can be used to verify the fix.

* strace.c (printleader): add a space after ")" in " <unavailable>)"

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

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