From 489cf6df2a0deed4d8f65a25fb2131605fa4785c Mon Sep 17 00:00:00 2001
From: SkyBlaise <zsc990124@gmail.com>
Date: Tue, 5 Sep 2023 13:54:51 +0800
Subject: [PATCH] fix null pointer exception caused by
 getDeletedLineWithHighestSimilarityInDiff returning null

---
 .../reposense/authorship/analyzer/AuthorshipAnalyzer.java     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/reposense/authorship/analyzer/AuthorshipAnalyzer.java b/src/main/java/reposense/authorship/analyzer/AuthorshipAnalyzer.java
index 0df2731268..5284ef95ba 100644
--- a/src/main/java/reposense/authorship/analyzer/AuthorshipAnalyzer.java
+++ b/src/main/java/reposense/authorship/analyzer/AuthorshipAnalyzer.java
@@ -114,6 +114,10 @@ private static CandidateLine getDeletedLineWithHighestSimilarity(RepoConfigurati
 
                 CandidateLine candidateLine = getDeletedLineWithHighestSimilarityInDiff(
                         fileDiffResult, lineContent, parentCommit, preImageFilePath);
+                if (candidateLine == null) {
+                    continue;
+                }
+
                 if (highestSimilarityLine == null
                         || candidateLine.getSimilarityScore() > highestSimilarityLine.getSimilarityScore()) {
                     highestSimilarityLine = candidateLine;