difftool --no-index: error out on --dir-diff (and don't crash)

diff --git a/merge.c b/merge.c
index dbbc9d9f802fef2781b9b60b798700f49229f84f..7c1d756c3fad6f9570b31c2c36f96e9f90df39f4 100644 (file)
--- a/merge.c
+++ b/merge.c
@@ -37,7 +37,7 @@ int try_merge_command(struct repository *r,
        argv_array_clear(&args);
 
        discard_index(r->index);
-       if (read_index(r->index) < 0)
+       if (repo_read_index(r) < 0)
                die(_("failed to read the cache"));
        resolve_undo_clear_index(r->index);