Add missing include

src/language/modules/SchemeModule.cpp

@@ -41,6 +41,7 @@
 #include <scheme/IDiscreteFunction.hpp>
 #include <scheme/IDiscreteFunctionDescriptor.hpp>
 #include <scheme/NeumannBoundaryConditionDescriptor.hpp>
+#include <scheme/ScalarDiamondScheme.hpp>
 #include <scheme/SymmetryBoundaryConditionDescriptor.hpp>
 #include <scheme/VectorDiamondScheme.hpp>
 #include <utils/Socket.hpp>