[PATCH v2 4/4] worktree: prevent null pointer dereference

[Caleb White <cdwhite3@pm.me>]

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If worktrees is NULL, free_worktrees() should return immediately to
prevent a null pointer dereference.

Signed-off-by: Caleb White <cdwhite3@pm.me>
---
 worktree.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/worktree.c b/worktree.c
index b08ecce..1cf15b0 100644
--- a/worktree.c
+++ b/worktree.c
@@ -28,8 +28,9 @@ void free_worktree(struct worktree *worktree)
 
 void free_worktrees(struct worktree **worktrees)
 {
-	int i = 0;
-	for (i = 0; worktrees[i]; i++)
+	if  (!worktrees)
+		return;
+	for (int i = 0; worktrees[i]; i++)
 		free_worktree(worktrees[i]);
 	free (worktrees);
 }
-- 
2.46.2


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