[PATCH 6/7] builtin/for-each-ref: stop using `the_repository`

[Usman Akinyemi <usmanakinyemi202@gmail.com>]

Remove the_repository global variable in favor of the repository
argument that gets passed in "builtin/for-each-ref.c".

When `-h` is passed to the command outside a Git repository, the
`run_builtin()` will call the `cmd_for_each_ref()` function with `repo`
set to NULL and then early in the function, `parse_options()` call will
give the options help and exit, without having to consult much of the
configuration file. So it is safe to omit reading the config when `repo`
argument the caller gave us is NULL.

Mentored-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Usman Akinyemi <usmanakinyemi202@gmail.com>
---
 builtin/for-each-ref.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/builtin/for-each-ref.c b/builtin/for-each-ref.c
index 8085ebd8fe..0e9b126605 100644
--- a/builtin/for-each-ref.c
+++ b/builtin/for-each-ref.c
@@ -1,4 +1,3 @@
-#define USE_THE_REPOSITORY_VARIABLE
 #include "builtin.h"
 #include "commit.h"
 #include "config.h"
@@ -20,7 +19,7 @@ static char const * const for_each_ref_usage[] = {
 int cmd_for_each_ref(int argc,
 		     const char **argv,
 		     const char *prefix,
-		     struct repository *repo UNUSED)
+		     struct repository *repo)
 {
 	struct ref_sorting *sorting;
 	struct string_list sorting_options = STRING_LIST_INIT_DUP;
@@ -63,7 +62,8 @@ int cmd_for_each_ref(int argc,
 
 	format.format = "%(objectname) %(objecttype)\t%(refname)";
 
-	git_config(git_default_config, NULL);
+	if (repo)
+		repo_config(repo, git_default_config, NULL);
 
 	/* Set default (refname) sorting */
 	string_list_append(&sorting_options, "refname");
-- 
2.48.1