message: Use prefix operator in for loop of DecodeBase58.
diff: @@ -44,7 +44,7 @@ bool DecodeBase58(const char* psz, std::vector<unsigned char>& vch)
  // Apply "b256 = b256 * 58 + ch".
  int carry = ch - pszBase58;
  int i = 0;
  - for (std::vector<unsigned char>::reverse_iterator it = b256.rbegin(); (carry != 0 || i < length) && (it != b256.rend()); it++, i++) {
  + for (std::vector<unsigned char>::reverse_iterator it = b256.rbegin(); (carry != 0 || i < length) && (it != b256.rend()); ++it, ++i) {
  carry += 58 * (*it);
  *it = carry % 256;
  carry /= 256;
  