[PATCH 7/8] commit-graph: not compatible with uninitialized repo

["Derrick Stolee via GitGitGadget" <gitgitgadget@xxxxxxxxx>]

From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>

Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
 commit-graph.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/commit-graph.c b/commit-graph.c
index 5097c7c12..233958e10 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -60,6 +60,9 @@ static struct commit_graph *alloc_commit_graph(void)
 
 static int commit_graph_compatible(struct repository *r)
 {
+	if (!r->gitdir)
+		return 0;
+
 	prepare_commit_graft(r);
 	if (r->parsed_objects && r->parsed_objects->grafts_nr)
 		return 0;
-- 
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