Fixes after rebase.

src/TNL/Communicators/MpiCommunicator.h

@@ -251,7 +251,7 @@ class MpiCommunicator
       static MPI_Datatype getDataType( const T& t )
       { 
          return MPITypeResolver< T >::getType();
-      };
+      }
 #endif
       
       //dim-number of dimensions, distr array of guess distr - 0 for computation

src/TNL/Meshes/DistributedMeshes/DistributedGridIO_MeshFunction.h

@@ -512,6 +512,7 @@ class DistributedGridIO<
 
       static bool load(const String& fileName,MeshFunctionType &meshFunction) 
       {
+#ifdef HAVE_MPI
          if(Communicators::MpiCommunicator::IsInitialized())//i.e. - isUsed
          {
             typename MeshFunctionType::RealType* data = meshFunction.getData().getData();