Second attempt to update lzma_sdk to 9.20

third_party/lzma_sdk/7zBuf.h

Index: third_party/lzma_sdk/7zBuf.h
diff --git a/third_party/lzma_sdk/7zBuf.h b/third_party/lzma_sdk/7zBuf.h
new file mode 100644
index 0000000000000000000000000000000000000000..e9f2f316d0dd9d0ebf57b8aa87eb1c93c9aa9124
--- /dev/null
+++ b/third_party/lzma_sdk/7zBuf.h
@@ -0,0 +1,39 @@
+/* 7zBuf.h -- Byte Buffer
+2009-02-07 : Igor Pavlov : Public domain */
+
+#ifndef __7Z_BUF_H
+#define __7Z_BUF_H
+
+#include "Types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct
+{
+  Byte *data;
+  size_t size;
+} CBuf;
+
+void Buf_Init(CBuf *p);
+int Buf_Create(CBuf *p, size_t size, ISzAlloc *alloc);
+void Buf_Free(CBuf *p, ISzAlloc *alloc);
+
+typedef struct
+{
+  Byte *data;
+  size_t size;
+  size_t pos;
+} CDynBuf;
+
+void DynBuf_Construct(CDynBuf *p);
+void DynBuf_SeekToBeg(CDynBuf *p);
+int DynBuf_Write(CDynBuf *p, const Byte *buf, size_t size, ISzAlloc *alloc);
+void DynBuf_Free(CDynBuf *p, ISzAlloc *alloc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif