From c0d2a4cad572d5bf2e11ccdf284004a01b09eba0 Mon Sep 17 00:00:00 2001
From: Victor Verbitsky <vektor@krista.ru>
Date: Thu, 20 Apr 2017 12:27:04 +0300
Subject: [PATCH] Fix NPE.

If method [LockGraph.shortestPath](https://github.com/Devexperts/dlcheck/blob/master/core/src/main/java/com/devexperts/dlcheck/LockGraph.java#L449) returns null, it's lead to NPE in method [LockGraph.publishPotentialDeadlockIfNeeded](https://github.com/Devexperts/dlcheck/blob/master/core/src/main/java/com/devexperts/dlcheck/LockGraph.java#L387).
---
 core/src/main/java/com/devexperts/dlcheck/LockGraph.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/core/src/main/java/com/devexperts/dlcheck/LockGraph.java b/core/src/main/java/com/devexperts/dlcheck/LockGraph.java
index 16d17ee..91de41b 100644
--- a/core/src/main/java/com/devexperts/dlcheck/LockGraph.java
+++ b/core/src/main/java/com/devexperts/dlcheck/LockGraph.java
@@ -446,7 +446,7 @@ private List<LockNode> shortestPath(LockNode from, LockNode to) {
                 }
             }
         }
-        return null;
+        return new ArrayList<>();
     }
 
     void dump() {