Get rid unused/shadowed variable compiler warnings.

Eases life of downstream developers that are fond of using warnings to find faulty code.

dune/geometry/quadraturerules/jacobiNquadrature.hh

@@ -86,7 +86,7 @@ namespace Dune {
     }
 #else
     template<typename type>
-    QuadratureRule<ct,1> UseLapackOrError( int const degree, int const alpha)
+    QuadratureRule<ct,1> UseLapackOrError( int const, int const)
     {
       DUNE_THROW(NotImplemented, "LAPACK must be enable to use JacobiN quadrature rules.");
     }