zerg mechanic work

src/engine/objects/Mine.java

@@ -581,7 +581,8 @@ public class Mine extends AbstractGameObject {
             building.isDeranking.compareAndSet(true, false);
 
         if(isAc) {
-            Thread zergMechanicThread = new Thread(new ZergMechanicThread(null, this));
+            Thread zergMechanicThread;
+            zergMechanicThread = new Thread(new ZergMechanicThread(null, this));
             zergMechanicThread.setName(this.parentZone.getName() + "Mine");
             zergMechanicThread.start();
         }