SimdScoreWrapper issues compile error in combination with MatrixScore

[rrahn]

When changing the underlying score type of a MatrixScore from standard int to int16_t, the SimdScoreWrapper issues a compile time error.

Here the expected code:

Score<int16_t, ScoreMatrix<AminoAcid, ScoreSpecBlosum62> > mat{-1, -30};
ExecutionPolicy<Serial, Vectorial> exec{};
auto scores = globalAlignmentScore(exec, left, right, mat);

which causes the compile time error.