result_set.get_string returns non-null-terminated string

[Solra Bizna]

result_set.get_string returns a value from m_row directly, which is a non-null-terminated string. No apparent means is provided to get the actual length of this string (by accessing m_lengths). This function can't actually be used in its current state.

I suggest modifying get_string to return a std::string, or adding a get_length method.

[arduc510 (arduc510)]

me, too.

but, I found other API.

sample)

data_ref dat = result_set.get_data();
string str = dat->string();

Fix.