message: Replace specific line number adjustment with generic adjustment 1, when wrapping playground text for evaluation.
  <rdar://problem/46408318>
diff: @@ -146,11 +146,10 @@ __builtin_logger_initialize()
  wrapped_stream.Printf("%s#sourceLocation(file: \"%s\", line: %u)\n%s\n",
  playground_prefix, pound_file, pound_line,
  orig_text);
  - first_body_line = 1;
  } else {
  wrapped_stream.Printf("%s%s", playground_prefix, orig_text);
  - first_body_line = 7;
  }
  + first_body_line = 1;
  return;
  } else if (repl) { // repl but not playground.
  if (pound_file && pound_line) {
  