Fix negative turnsToNewPopulation while razing

missing bracket, sorry I will never compile any programmes in my life, I will never learn Kotlin and will have a happy life. I wrote it by hand in the textarea on github.com 😎

core/src/com/unciv/logic/city/CityInfo.kt

@@ -222,6 +222,7 @@ class CityInfo {
                     population.foodStored=population.getFoodToNextPopulation()-1//...reduce below the new growth treshold
                 }
             }
+        }
         else population.nextTurn(stats.food)
 
         if(this in civInfo.cities) { // city was not destroyed