[PATCH] builtin/init-db.c: fix a sparse warning

[Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxxx>]

Signed-off-by: Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxxx>
---

Hi Eric,

If you need to re-roll your 'es/worktree-repair' branch, could you
please squash this into the relevant patch (commit 44a466ca7f (init:
make --separate-git-dir work from within linked worktree, 27-08-2020)).

Thanks!

ATB,
Ramsay Jones

 builtin/init-db.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/builtin/init-db.c b/builtin/init-db.c
index 6a94d20a2e..cd3e760541 100644
--- a/builtin/init-db.c
+++ b/builtin/init-db.c
@@ -661,7 +661,7 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
 			if (chdir(mainwt.buf) < 0)
 				die_errno(_("cannot chdir to %s"), mainwt.buf);
 			strbuf_release(&mainwt);
-			git_dir = strbuf_detach(&sb, 0);
+			git_dir = strbuf_detach(&sb, NULL);
 		}
 		strbuf_release(&sb);
 	}
-- 
2.28.0