builtin.h: take over documentation from api-builtin.txt

diff --git a/convert.c b/convert.c
index 7d2a519dafe5dcf892df10c51e1bfb83bc8a2091..deaf0ba7b30ffa4e0003649985ef1594ee2ac049 100644 (file)
--- a/convert.c
+++ b/convert.c
@@ -583,7 +583,8 @@ static int apply_multi_file_filter(const char *path, const char *src, size_t len
 
        if (!subprocess_map_initialized) {
                subprocess_map_initialized = 1;
-               hashmap_init(&subprocess_map, (hashmap_cmp_fn) cmd2process_cmp, 0);
+               hashmap_init(&subprocess_map, (hashmap_cmp_fn) cmd2process_cmp,
+                            NULL, 0);
                entry = NULL;
        } else {
                entry = (struct cmd2process *)subprocess_find_entry(&subprocess_map, cmd);