Re: [PATCH v3] path.c enter_repo(): fix unproper strbuf unwrapping and memory leakage

According to strbuf.h, strbuf_detach is the sole supported method
to unwrap a memory buffer from its strbuf shell.
...

diff --git a/path.c b/path.c
index 969b494..9801617 100644
--- a/path.c
+++ b/path.c

@@ -625,6 +625,7 @@ const char *enter_repo(const char *path, int strict)
 {
 	static struct strbuf validated_path = STRBUF_INIT;
 	static struct strbuf used_path = STRBUF_INIT;

...
+return_null:
+	free(dbuf);
+	strbuf_release(&used_path);
+	strbuf_release(&validated_path);
 	return NULL;
 }