Fix potential memory leak on cache purge.

Signed-off-by: Chris Sanders <[email protected]>

Author: Chris Sanders

src/main/java/org/spout/physics/engine/DynamicsWorld.java

@@ -603,13 +603,17 @@ public boolean isTicking() {
 	 * Disperses the cache of bodies added/removed during the physics tick.
 	 */
 	public void disperseCache() {
-		for (RigidBody body : mRigidBodiesToAddCache) {
-			addRigidBody(body);
-		}
+		//Only add bodies that aren't being removed
+		mRigidBodiesToAddCache.removeAll(mRigidBodiesToDeleteCache);
 
 		for (RigidBody body : mRigidBodiesToDeleteCache) {
 			destroyRigidBody(body);
 		}
+
+		for (RigidBody body : mRigidBodiesToAddCache) {
+			addRigidBody(body);
+		}
+
 		mRigidBodiesToAddCache.clear();
 		mRigidBodiesToDeleteCache.clear();
 	}

src/main/java/org/spout/physics/engine/linked/LinkedDynamicsWorld.java

@@ -68,8 +68,8 @@ public LinkedDynamicsWorld(Vector3 gravity, LinkedWorldInfo info) {
 	}
 
 	@Override
-	protected void tick(float dt) {
-		super.tick(dt);
+	public void update() {
+		super.update();
 		clearLinkedBodies();
 	}