Small fixes in matrix reader and writer.

src/TNL/Matrices/MatrixReader.h

@@ -81,7 +81,6 @@ class MatrixReader
 
 /// This is to prevent from appearing in Doxygen documentation.
 /// \cond HIDDEN_CLASS
-
 template< typename Matrix >
 class MatrixReader< Matrix, TNL::Devices::Host >
 {

src/TNL/Matrices/MatrixWriter.h

@@ -123,7 +123,7 @@ class MatrixWriter
                             bool verbose = false );
 
    protected:
-      using HostMatrix = typename Matrix::Self< RealType, TNL::Devices::Host >;
+      using HostMatrix = typename Matrix::template Self< RealType, TNL::Devices::Host >;
 };
 
 /// This is to prevent from appearing in Doxygen documentation.