commit-graph: add missing forward declaration

diff --git a/commit-graph.h b/commit-graph.h
index 506cb45fb1178256b2d6c9752c28e300fc0791b2..674052bef49c08a14dedb8b5ba69e1a174f34b1f 100644 (file)
--- a/commit-graph.h
+++ b/commit-graph.h
@@ -5,6 +5,8 @@
 #include "repository.h"
 #include "string-list.h"
 
+struct commit;
+
 char *get_commit_graph_filename(const char *obj_dir);
 
 /*