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Fix hierarchy packed length read past section - #28
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Problem: a doubly LZ4 packed hierarchy section reads a varint from a buffer sized to the section. An unterminated varint can therefore read past the end of the buffer. Solution: add a null byte at the end of the buffer so an unterminated varint terminates within the allocation, and check if that has happened.
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Problem: a doubly LZ4 packed hierarchy section reads a varint from a buffer sized to the section. An unterminated varint can therefore read past the end of the buffer.
Solution: add a null byte at the end of the buffer so an unterminated varint terminates within the allocation, and check if that has happened.