fix template argument

void computeGradQi(double* gradQi, const double* const u, const int requestedDirection, const int requestedVariableIndex, const tarch::la::Vector<DIMENSIONS, double>& sizeOfPatch) {

	const int numberOfVariables = SolverType::NumberOfVariables;

	const int order = SolverType::Order;

	computeGradQi(gradQi, u, kernels::legendre::dudx, requestedDirection, requestedVariableIndex, sizeOfPatch, numberOfVariables, order);

	computeGradQi<SolverType>(gradQi, u, kernels::legendre::dudx, requestedDirection, requestedVariableIndex, sizeOfPatch, numberOfVariables, order);

}