Fix string.compare() logic. It happens to be working luckily.

    static const int32_t EN_US_ADDITIONAL_U[];

    static bool isEnLocale(const std::string *locale_str) {

        return locale_str && locale_str->size() >= LOCALE_EN_US.size()

                && LOCALE_EN_US.compare(0, LOCALE_EN_US.size(), *locale_str);

        const size_t LOCALE_EN_US_SIZE = LOCALE_EN_US.size();

        return locale_str && locale_str->size() >= LOCALE_EN_US_SIZE

                && locale_str->compare(0, LOCALE_EN_US_SIZE, LOCALE_EN_US) == 0;

    }

 public:

            return 0;

        }

    }

    static bool hasAdditionalChars(const std::string *locale_str, const int32_t c) {

        return getAdditionalCharsSize(locale_str, c) > 0;

    }

};

} // namespace latinime

#endif // LATINIME_ADDITIONAL_PROXIMITY_CHARS_H