mingw: fix possible buffer overrun when calling `GetUserNameW()`

diff --git a/refs.h b/refs.h
index 2727405b61c4e26538c3e76b528df37078337376..730d05ad91a6ac8961c58d599942a5721960d7d7 100644 (file)
--- a/refs.h
+++ b/refs.h
@@ -463,6 +463,12 @@ int for_each_reflog(each_ref_fn fn, void *cb_data);
  */
 int check_refname_format(const char *refname, int flags);
 
+/*
+ * Apply the rules from check_refname_format, but mutate the result until it
+ * is acceptable, and place the result in "out".
+ */
+void sanitize_refname_component(const char *refname, struct strbuf *out);
+
 const char *prettify_refname(const char *refname);
 
 char *refs_shorten_unambiguous_ref(struct ref_store *refs,