Merge branch 'feature/remove-warnings' into feature/faster-ilu-implementation

dune/istl/paamg/pinfo.hh

@@ -83,6 +83,7 @@ namespace Dune
       typename FieldTraits<typename T1::field_type>::real_type norm (const T1& x) const
       {
         assert(false && "this function should never be called");
+        return typename FieldTraits<typename T1::field_type>::real_type(0);
       }
 
       template<class T>

dune/istl/scalarproducts.hh

@@ -146,7 +146,7 @@ namespace Dune {
      */
     virtual field_type dot (const X& x, const X& y)
     {
-      field_type result;
+      field_type result(0);
       communication.dot(x,y,result);
       return result;
     }
@@ -219,7 +219,7 @@ namespace Dune {
      */
     virtual field_type dot (const X& x, const X& y)
     {
-      field_type result;
+      field_type result(0);
       communication.dot(x,y,result);
       return result;
     }