ole32: Ignore high part of size in storage version 3 files.

dlls/ole32/storage32.c

@@ -3446,11 +3446,19 @@ static HRESULT StorageImpl_ReadDirEntry(
       OFFSET_PS_SIZE,
       &buffer->size.u.LowPart);
 
+    if (This->bigBlockSize < 4096)
+    {
+      /* Version 3 files may have junk in the high part of size. */
+      buffer->size.u.HighPart = 0;
+    }
+    else
+    {
       StorageUtl_ReadDWord(
         currentEntry,
         OFFSET_PS_SIZE_HIGH,
         &buffer->size.u.HighPart);
     }
+  }
 
   return readRes;
 }