Define NumberPlacer's templates more precise

template<class T> void NumberPlacer::dealloc(T)
template<class T> void NumberPlacer::dealloc(T, size_t)
Move NumberPlacer's templates' logic to NumberPlacer::dealloc()

template<class T> void NumberPlacer::dealloc(T)
template<class T> void NumberPlacer::dealloc(T, size_t)