fix "unused var"

Author: abma

CEconomy.cpp

@@ -1067,7 +1067,6 @@ void CEconomy::tryBuildingDefense(CGroup* group) {
 
 //bool allow;
 int size;
-float k;
 unitCategory incCats, excCats;
 buildType bt;
 CCoverageCell::NType layer;
@@ -1096,9 +1095,9 @@ void CEconomy::tryBuildingDefense(CGroup* group) {
 }
 
 size = ai->coverage->getLayerSize(layer);
-k = size / (ai->unittable->staticUnits.size() - size + 1.0f);
+/*const float k = size / (ai->unittable->staticUnits.size() - size + 1.0f);
 
-/*switch (ai->difficulty) {
+switch (ai->difficulty) {
 case DIFFICULTY_EASY:
 allow = k < 0.11f;
 break;