dmg: fix checksum error

dmg/dmglib.c

@@ -380,6 +380,7 @@ int convertToDMG(AbstractFile* abstractIn, AbstractFile* abstractOut) {
 		abstractIn->seek(abstractIn, 0);
 		blkx = insertBLKX(abstractOut, abstractIn, 0, fileLength/SECTOR_SIZE, ENTIRE_DEVICE_DESCRIPTOR, CHECKSUM_CRC32,
 					&BlockCRC, &uncompressedToken, &CRCProxy, &dataForkToken, NULL);
+		blkx->checksum.data[0] = uncompressedToken.crc;
 		resources = insertData(resources, "blkx", 0, "whole disk (unknown partition : 0)", (const char*) blkx, sizeof(BLKXTable) + (blkx->blocksRunCount * sizeof(BLKXRun)), ATTRIBUTE_HDIUTIL);
 		free(blkx);