[Freeciv-Dev] (PR#3725) Unit blinking/movement corrupts displaying of city descriptions

["Guest" <rt-guest@xxxxxxxxxxxxxx>]

When a unit blinks or moves on top of a city's influence area, the city
descriptions get erased (if that function is enabled, of course).

I tried with the sources, and I found that putting the following piece
of code apparently solves the problem, at the end of the function
'update_map_canvas', in /client/gui-gtk/mapview.c   (also works with
gui-gkt-2.0/mapview.c):

     ... function body...

     // Redraw city descriptions
     show_city_descriptions();

   } // End of 'update_map_canvas'

I don't know the code very much, so I cannot determine how optimum this
code is.

Regards,
  Dani.