Java solution of 572 - Subtree of Another Tree does not pass the required tests

[creatorblue32]

Java solution of 572 - Subtree of Another Tree fails when the following is presented as input:

[1,1]
[1]

(which is a Leetcode test case that it fails, making the solution incorrect)

[KC10201]

Made a PR to fix the solution. #667

[Shidhanta]

One test case that it is failing on is :
[1,1]
[1]
Solution cant tell that the subtree has been completely found if there is a single node

[KC10201]

solution has been updated, and this issue can be closed now.