PVS-Studio warning V650 for Wine

static DWORD WMSFT_append_arraydesc(.... WMSFT_TLBFile *file)
{
  ....
  DWORD offs = file->arraydesc_seg.len;
  DWORD *encoded;
  encoded=(DWORD*)((char*)file->arraydesc_seg.data) + offs;//<==
  ....
}

This suspicious code was found in Wine project by PVS-Studio static code analyzer.
Warning message is:
V650 Type casting operation is utilized 2 times in succession. Next, the '+' operation is executed. Probably meant: (T1)((T2)a + b). typelib.c 9147

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