PVS-Studio warning V583 for Scilab

static SciErr fillCommonSparseMatrixInList(....)
{
  ....
  addErrorMessage(&sciErr, API_ERROR_FILL_SPARSE_IN_LIST,
   _("%s: Unable to create list item #%d in Scilab memory"),
   _iComplex ? "createComplexSparseMatrixInList" :
               "createComplexSparseMatrixInList",
   _iItemPos + 1);
  ....
}

This suspicious code was found in Scilab project by PVS-Studio static code analyzer.
Warning message is:
V583 The '?:' operator, regardless of its conditional expression, always returns one and the same value: "createComplexSparseMatrixInList". api_list.cpp 2398

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