Luis Díaz Más 6964f5f9f2 DataBuf::c_data() returns nullptr when empty + avoid duplication ... After the previous commit, I realized that std::vector::data() also returns nullptr when the vector is empty. So I decided to emulate this behavior in DataBuf::c_data(). Anyways, the changes done in the previous commit are valid and allow us to avoid some processing when the DataBuf is empty.		2022-04-14 10:40:58 +02:00
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exiv2	DataBuf::c_data() returns nullptr when empty + avoid duplication	2022-04-14 10:40:58 +02:00