private void calculateCompressedBlockSizes() {

		for (int i = 0; i < blockPointerTable.size() - 1; i++) {
			compressedBlockSizes.add(blockPointerTable.get(i + 1) - blockPointerTable.get(i));
		}

	}
Uses the block pointer table which contains addresses
to calculate the size of the compressed blocks of data
for use in uncompressing each block. Adds the size of each block
to the compressedBlockSizes arrayList.
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/cramfs/CramFsBlockReader.java