abbrev: add FALLBACK_DEFAULT_ABBREV to prepare for auto sizing

diff --git a/submodule.c b/submodule.c
index 0ef2ff4321d1723d05e9328e564313437ec8476e..aba94dd07dbd5c8d1e9cad5b3980bb4a9759e6cf 100644 (file)
--- a/submodule.c
+++ b/submodule.c
@@ -728,9 +728,10 @@ void check_for_new_submodule_commits(unsigned char new_sha1[20])
        sha1_array_append(&ref_tips_after_fetch, new_sha1);
 }
 
-static void add_sha1_to_argv(const unsigned char sha1[20], void *data)
+static int add_sha1_to_argv(const unsigned char sha1[20], void *data)
 {
        argv_array_push(data, sha1_to_hex(sha1));
+       return 0;
 }
 
 static void calculate_changed_submodule_paths(void)