[PATCH v2 4/6] commit-graph: add free_commit_graph

[Jonathan Tan]

Signed-off-by: Jonathan Tan <jonathanta...@google.com>
---
 builtin/commit-graph.c |  2 ++
 commit-graph.c         | 24 ++++++++++++++----------
 commit-graph.h         |  2 ++
 3 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index c7d0db5ab4..0bf0c48657 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -115,6 +115,8 @@ static int graph_read(int argc, const char **argv)
                printf(" large_edges");
        printf("\n");
 
+       free_commit_graph(graph);
+
        return 0;
 }
 
diff --git a/commit-graph.c b/commit-graph.c
index 5ba60f63f9..6d1bc4ff7c 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -231,16 +231,8 @@ static int prepare_commit_graph(void)
 
 static void close_commit_graph(void)
 {
-       if (!commit_graph)
-               return;
-
-       if (commit_graph->graph_fd >= 0) {
-               munmap((void *)commit_graph->data, commit_graph->data_len);
-               commit_graph->data = NULL;
-               close(commit_graph->graph_fd);
-       }
-
-       FREE_AND_NULL(commit_graph);
+       free_commit_graph(commit_graph);
+       commit_graph = NULL;
 }
 
 static int bsearch_graph(struct commit_graph *g, struct object_id *oid, 
uint32_t *pos)
@@ -1033,3 +1025,15 @@ int verify_commit_graph(struct repository *r, struct 
commit_graph *g)
 
        return verify_commit_graph_error;
 }
+
+void free_commit_graph(struct commit_graph *g)
+{
+       if (!g)
+               return;
+       if (g->graph_fd >= 0) {
+               munmap((void *)g->data, g->data_len);
+               g->data = NULL;
+               close(g->graph_fd);
+       }
+       free(g);
+}
diff --git a/commit-graph.h b/commit-graph.h
index 674052bef4..94defb04a9 100644
--- a/commit-graph.h
+++ b/commit-graph.h
@@ -58,4 +58,6 @@ void write_commit_graph(const char *obj_dir,
 
 int verify_commit_graph(struct repository *r, struct commit_graph *g);
 
+void free_commit_graph(struct commit_graph *);
+
 #endif
-- 
2.18.0.203.gfac676dfb9-goog