Ensure git_index_entry is not NULL before trying to free it
diff --git a/src/index.c b/src/index.c
index 079b0cb..cbace36 100644
--- a/src/index.c
+++ b/src/index.c
@@ -292,6 +292,9 @@ static void index_entry_reuc_free(git_index_reuc_entry *reuc)
static void index_entry_free(git_index_entry *entry)
{
+ if (!entry)
+ return;
+
memset(&entry->id, 0, sizeof(entry->id));
git__free(entry);
}