Second attempt to update lzma_sdk to 9.20

third_party/lzma_sdk/7zCrc.h

Index: third_party/lzma_sdk/7zCrc.h
diff --git a/third_party/lzma_sdk/7zCrc.h b/third_party/lzma_sdk/7zCrc.h
index bb3d481f4e83cd511a50ca7f1a1ecab1efc6cfcd..38e3e5fbc062ad64d54da74b07e1fef17c1140e0 100644
--- a/third_party/lzma_sdk/7zCrc.h
+++ b/third_party/lzma_sdk/7zCrc.h
@@ -1,21 +1,25 @@
-/* 7zCrc.h */
+/* 7zCrc.h -- CRC32 calculation
+2009-11-21 : Igor Pavlov : Public domain */
 
 #ifndef __7Z_CRC_H
 #define __7Z_CRC_H
 
-#include <stddef.h>
-
 #include "Types.h"
 
+EXTERN_C_BEGIN
+
 extern UInt32 g_CrcTable[];
 
-void MY_FAST_CALL CrcGenerateTable();
+/* Call CrcGenerateTable one time before other CRC functions */
+void MY_FAST_CALL CrcGenerateTable(void);
 
 #define CRC_INIT_VAL 0xFFFFFFFF
-#define CRC_GET_DIGEST(crc) ((crc) ^ 0xFFFFFFFF)
+#define CRC_GET_DIGEST(crc) ((crc) ^ CRC_INIT_VAL)
 #define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
 
 UInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size);
 UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size);
 
+EXTERN_C_END
+
 #endif