From dc5fe00c6562e46c88a5c5b975121c202eae1180 Mon Sep 17 00:00:00 2001
From: Boris Egorov <egorov@linux.com>
Date: Sun, 25 Jan 2015 00:07:23 +0600
Subject: [PATCH] pathspec: do not try to dereference NULL

pathspec_match_free() should not dereference a NULL passed to it.

I found this issue when I tried to run example log program with
nonexistent branch:

./example/log help

Such call leads to segmentation fault.
---
 src/pathspec.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/pathspec.c b/src/pathspec.c
index 8b469f717..6aef574c8 100644
--- a/src/pathspec.c
+++ b/src/pathspec.c
@@ -296,6 +296,9 @@ int git_pathspec_matches_path(
 
 static void pathspec_match_free(git_pathspec_match_list *m)
 {
+	if (!m)
+		return;
+
 	git_pathspec_free(m->pathspec);
 	m->pathspec = NULL;