fix: add condition for moving pointer to next nodes.

Author: itsmohitgoel

src/chapter03linkedlists/DoublyLinkedList.java

@@ -163,6 +163,7 @@ public synchronized void removeMatched(DLLNode node) {
 				p.next.prev = p.prev;
 				return;
 			}
+			p = p.getNext();
 		}
 	}