sync further changes from uts/aslr

*** 45,54 ****
--- 45,55 ----
      exit 1;
  fi
  
  ## kernel-produced core
  kill -SEGV $pid
+ wait $pid >/dev/null 2>&1
  
  cat > core-expected.$$ <<EOF
  core 'core' of $pid:    sleep 100000
          E:      aslr
          I:      aslr