The return statement uses d1, d2, d3, and d4 variables but the code
which initialize them inside a if statement and not always this if
statement is corrent. On the other hand these variables are using for
return statement and needed to be initialized. A trivial fix to pervent
some compilers will give build error.
Reviewed-by: Igor Murzov <e-mail@date.by>
3b849a7ae9