for-each-ref: load config earlier

In most commands we load config before parsing command line
options, since it lets the latter override the former with a
simple variable assignment. In the case of for-each-ref,
though, we do it in the reverse order. This is OK with
the current code, since there's no interaction between the
config and command-line options.

However, as the ref-filter code starts to care about config
during verify_ref_format(), we'll want to make sure the
config is loaded. Let's bump the config to the usual spot
near the top of the function.

We can drop the comment there; it's impossible to keep a
"why we load the config" comment like this up to date with
every config option we might be interested in. And indeed,
it's already stale; we'd care about core.abbrev, for
instance, when %(objectname:short) is used.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/for-each-ref.c

@@ -54,6 +54,8 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 
 	format.format = "%(objectname) %(objecttype)\t%(refname)";
 
+	git_config(git_default_config, NULL);
+
 	parse_options(argc, argv, prefix, opts, for_each_ref_usage, 0);
 	if (maxcount < 0) {
 		error("invalid --count argument: `%d'", maxcount);
@@ -71,9 +73,6 @@ int cmd_for_each_ref(int argc, const char **argv, const char *prefix)
 	sorting->ignore_case = icase;
 	filter.ignore_case = icase;
 
-	/* for warn_ambiguous_refs */
-	git_config(git_default_config, NULL);
-
 	filter.name_patterns = argv;
 	filter.match_as_path = 1;
 	filter_refs(&array, &filter, FILTER_REFS_ALL | FILTER_REFS_INCLUDE_BROKEN);