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 <dvlasenk@redhat.com>
1 file changed