From f902184fa8aa37b0ce8b725da5657ef2ed2005dd Mon Sep 17 00:00:00 2001
From: Ron Yorston <rmy@pobox.com>
Date: Sat, 12 Dec 2020 13:23:38 +0000
Subject: win32: make realpath() return an error if necessary

resolve_symlinks() uses GetFinalPathNameByHandleA which is loaded
at runtime because it isn't available in all versions of Windows.

If GetFinalPathNameByHandleA isn't available resolve_symlinks()
(and hence realpath()) should return a NULL pointer to indicate an
error, not the original path.  Not returning NULL causes an infinite
loop in do_lstat().

See GitHub issue #204.
---
 win32/mingw.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/win32/mingw.c b/win32/mingw.c
index 75f15aa30..ed0989be2 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -1088,7 +1088,6 @@ static char *resolve_symlinks(char *path)
 				FILE_FLAG_BACKUP_SEMANTICS, NULL);
 	if (h != INVALID_HANDLE_VALUE) {
 		if (!INIT_PROC_ADDR(kernel32.dll, GetFinalPathNameByHandleA)) {
-			ptr = path;
 			goto end;
 		}
 
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