Fixes `error: implicit conversion loses integer precision: sp_int64' (aka long long) to sp_digit (aka int)` building with `./configure CC="clang -m32" --enable-sp && make`
Fixes `error: implicit conversion loses integer precision: sp_int64' (aka long long) to sp_digit (aka int)` building with `./configure CC="clang -m32" --enable-sp && make`