Check for null can_build_improvement in city object.

freeciv · Jul 23, 2015 · b830ee0 · b830ee0
1 parent eeb7c6a
commit b830ee0
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/freeciv-web/src/main/webapp/javascript/city.js b/freeciv-web/src/main/webapp/javascript/city.js
@@ -502,7 +502,8 @@ function can_city_build_unit_now(pcity, punittype)
 **************************************************************************/
 function can_city_build_improvement_now(pcity, pimprove)
 {  
-  return (pcity['can_build_improvement'][pimprove['id']] == "1"); 
+  return (pcity != null && pcity['can_build_improvement'] != null
+          && pcity['can_build_improvement'][pimprove['id']] == "1"); 
 }