Merge PEI & DXE LzmaCustomDecompressLib. A previous implementation

was causing the LZMA decompression code to request a large buffer,
which caused an ASSERT to fail for PEI's AllocatePool.  The
current implementation, which uses the LzmaDecode function, does
not have this issue and therefore both the PEI & DXE versions can
use AllocatePool/FreePool.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8236 6f19259b-4bc3-4df7-8a09-765794883524

IntelFrameworkModulePkg/Library/LzmaCustomDecompressLib/LzmaDecompress.c

@@ -29,7 +29,43 @@
 #include "Sdk/C/7zVersion.h"
 #include "Sdk/C/LzmaDec.h"
 
-extern ISzAlloc g_Alloc;
+/**
+  Allocation routine used by LZMA decompression.
+
+  @param p                Pointer to the ISzAlloc instance
+  @param size             The size in bytes to be allocated
+
+  @return The allocated pointer address, or NULL on failure
+**/
+STATIC
+VOID *
+SzAlloc (
+  void *p,
+  size_t size
+  )
+{
+  return AllocatePool (size);
+}
+
+/**
+  Free routine used by LZMA decompression.
+
+  @param p                Pointer to the ISzAlloc instance
+  @param address          The address to be freed
+**/
+STATIC
+VOID
+SzFree (
+  void *p,
+  void *address
+  )
+{
+  if (address != NULL) {
+    FreePool (address);
+  }
+}
+
+STATIC ISzAlloc g_Alloc = { SzAlloc, SzFree };
 
 #define LZMA_HEADER_SIZE (LZMA_PROPS_SIZE + 8)