mine towers can be gold repaired when mine not active

src/engine/net/client/handlers/RepairBuildingMsgHandler.java

@@ -61,7 +61,7 @@ public class RepairBuildingMsgHandler extends AbstractClientMsgHandler {
 
         //cannot repair mines during 24/7 activity.
 
-        if (targetBuilding.getBlueprint() != null && targetBuilding.getBlueprint().getBuildingGroup() == BuildingGroup.MINE) {
+        if (targetBuilding.getBlueprint() != null && targetBuilding.getBlueprint().getBuildingGroup() == BuildingGroup.MINE && targetBuilding.assetIsProtected() == false) {
                 return;
         }