add fix to remember time step bug

Common/CreateFile.cpp

@@ -460,6 +460,8 @@ void CreateOutputFile(std::string fileName, int format)
         break;
       }
       int numViews = (int)opt_post_nb_views(0, GMSH_GET, 0), numSteps = 0;
+
+      // FIXME: this does not handle empty time steps!
       for(int i = 0; i < numViews; i++){
         if(opt_view_visible(i, GMSH_GET, 0))
           numSteps = std::max(numSteps, (int)opt_view_nb_timestep(i, GMSH_GET, 0));