[!712] Fixed Lapackcall for eigenvectors

Merge branch 'master' into 'master'

ref:core/dune-common Replaced nullptr argument in Lapack call with vr.get()

See merge request [core/dune-common!712]

  [core/dune-common!712]: gitlab.dune-project.org/core/dune-common/merge_requests/712

dune/common/dynmatrixev.hh

@@ -69,7 +69,7 @@ namespace Dune {
 
         // call LAPACK routine (see fmatrixev_ext.cc)
         eigenValuesNonsymLapackCall(&jobvl, &jobvr, &N, matrixVector.get(), &N,
-                                    eigenR.get(), eigenI.get(), nullptr, &N, nullptr, &N, work.get(),
+                                    eigenR.get(), eigenI.get(), nullptr, &N, vr.get(), &N, work.get(),
                                     &lwork, &info);
 
         if( info != 0 )