Add missing View->Dirty check for 2D string drawing. Caused a seg.
fault if called during file merge (due to the Fl::check() triggered by
a Msg() call).

Graphics/Graph2D.cpp

-// $Id: Graph2D.cpp,v 1.22 2002-11-17 02:27:26 geuzaine Exp $
+// $Id: Graph2D.cpp,v 1.23 2002-11-17 04:15:17 geuzaine Exp $
 //
 // Copyright (C) 1997 - 2002 C. Geuzaine, J.-F. Remacle
 //
@@ -469,7 +469,7 @@ void Draw_Text2D(void){
 
   for(i=0;i<List_Nbr(CTX.post.list);i++){
     v = (Post_View*)List_Pointer(CTX.post.list,i);
-    if(v->Visible && v->DrawStrings) 
+    if(v->Visible && !v->Dirty && v->DrawStrings) 
       Draw_Text2D3D(2, v->TimeStep, v->NbT2, v->T2D, v->T2C);
   }