Error msg change, like the previous suggested change.

Author: TobiKattmann

SU2_CFD/src/solvers/CHeatSolver.cpp

@@ -266,8 +266,8 @@ void CHeatSolver::LoadRestart(CGeometry **geometry, CSolver ***solver, CConfig *
   /*--- Detect a wrong solution file ---*/
 
   if (counter != nPointDomain) {
-    SU2_MPI::Error(string("The solution file ") + restart_filename + string(" doesn't match with the mesh file!\n") +
-                   string("It could be empty lines at the end of the file."), CURRENT_FUNCTION);
+    SU2_MPI::Error(string("The solution file ") + restart_filename + string(" does not match with the mesh file!\n") +
+                   string("This can be caused by empty lines at the end of the file."), CURRENT_FUNCTION);
   }
 
   /*--- Communicate the loaded solution on the fine grid before we transfer

SU2_CFD/src/solvers/CTurbSolver.cpp

@@ -261,8 +261,8 @@ void CTurbSolver::LoadRestart(CGeometry** geometry, CSolver*** solver, CConfig*
     /*--- Detect a wrong solution file ---*/
 
     if (counter != nPointDomain) {
-      SU2_MPI::Error(string("The solution file ") + restart_filename + string(" doesn't match with the mesh file!\n") +
-                         string("It could be empty lines at the end of the file."),
+      SU2_MPI::Error(string("The solution file ") + restart_filename + string(" does not match with the mesh file!\n") +
+                         string("This can be caused by empty lines at the end of the file."),
                      CURRENT_FUNCTION);
     }