From 48a054cc8cd2409b3183ece4389014b06a00f6de Mon Sep 17 00:00:00 2001
From: Shane Mc Cormack <shanemcc@gmail.com>
Date: Sun, 1 May 2016 20:41:19 +0100
Subject: [PATCH] Fix NPE if there are no parents for a commit.

---
 src/org/mdonoughe/JGitDescribeTask.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/org/mdonoughe/JGitDescribeTask.java b/src/org/mdonoughe/JGitDescribeTask.java
index aae36d7..39c275a 100644
--- a/src/org/mdonoughe/JGitDescribeTask.java
+++ b/src/org/mdonoughe/JGitDescribeTask.java
@@ -342,7 +342,9 @@ private static int distanceBetween (RevCommit child, RevCommit parent) {
                 Queue<RevCommit> pq = new LinkedList<RevCommit>();
                 pq.add(commit);
                 while (pq.size() > 0) {
-                    for (RevCommit pp : pq.remove().getParents()) {
+                    RevCommit rc = pq.remove();
+                    if (rc == null || rc.getParents() == null) { continue; }
+                    for (RevCommit pp : rc.getParents()) {
                         if (!seenb.contains(pp)) {
                             seenb.add(pp);
                             pq.add(pp);