Better exception handling by rethrowing directly

Otherwise the type of the exception gets lost.

dune/elasticity/assemblers/localadolcstiffness.hh

@@ -77,7 +77,7 @@ energy(const LocalView& localView,
         energy = localEnergy_->energy(localView,localAConfiguration);
     } catch (Dune::Exception &e) {
         trace_off();
-        throw e;
+        throw;
     }
 
     energy >>= pureEnergy;