When the reader encounters a line which is longer than the currently allocated input buffer it calls this function to increase the size of the input buffer. The input buffer is linearly increased by BUFFER_INCREMENT size (defined in the header section of reader.c
When a new buffer is allocated the bytes from the old buffer are copied to the new and the old buffer is released. It is vital that the buffer is always referenced via the pRo->buffer pointer because resizing buffer does change the location of the buffer.
If the memory allocation fails the function return READER_ERROR_MEMORY_LOW error.
Otherwise it returns zero.
int reader_IncreaseBuffer(pReadObject pRo
){