fix error msg

Geo/Geo.cpp

@@ -3501,7 +3501,7 @@ int Extrude_ProtudeSurface(int type, int is,
     break;
   default:
     Msg::Error("Unknown extrusion type");
-    return ps->Num;
+    break;
   }
 
   // this is done only for backward compatibility with the old
@@ -3532,7 +3532,6 @@ int Extrude_ProtudeSurface(int type, int is,
 
   List_Reset(ListOfTransformedPoints);
 
-
   return chap_num;
 }