Fixed index error in DriverArpack WriteFld call.

git-svn-id: https://gforge.sci.utah.edu/svn/nektar/trunk@3213 305cdda6-5ce1-45b3-a98d-dfc68c8b3305

solvers/Auxiliary/DriverArpack.cpp

@@ -304,7 +304,7 @@ namespace Nektar
 			
             std::string file = m_session->GetFilename().substr(0,m_session->GetFilename().find_last_of('.')) + "_eig_" + boost::lexical_cast<std::string>(i);
             
-            WriteFld(file,z + k*nq);
+            WriteFld(file,z + i*nq);
         }
 
         fclose (pFile);