message: One more strstr to remove
diff: @@ -350,9 +350,9 @@ static void WriteQuotedString(Serializer &serializer, WriteCSVData &csv_data, co
  } else {
  // complex CSV
  // check for quote or escape separately
  - if (strstr(str, options.quote.c_str())) {
  + if (ContainsFun::Find((const unsigned char*) str, len, (const unsigned char*) options.quote.c_str(), options.quote.size()) != INVALID_INDEX) {
  requires_escape = true;
  - } else if (strstr(str, options.escape.c_str())) {
  + } else if (ContainsFun::Find((const unsigned char*) str, len, (const unsigned char*) options.escape.c_str(), options.escape.size()) != INVALID_INDEX) {
  requires_escape = true;
  }
  }
  