combine-diff: optimize combine_diff_path sets intersection

diff --git a/shell.c b/shell.c
index 66350b220cc74abd383e10770f8325ba4e658e87..5c0d47a5cc1ae85a03e40321e97ddfa859ff7e1a 100644 (file)
--- a/shell.c
+++ b/shell.c
@@ -15,7 +15,7 @@ static int do_generic_cmd(const char *me, char *arg)
        setup_path();
        if (!arg || !(arg = sq_dequote(arg)))
                die("bad argument");
-       if (prefixcmp(me, "git-"))
+       if (!starts_with(me, "git-"))
                die("bad command");
 
        my_argv[0] = me + 4;