real_path_internal(): add comment explaining use of cwd

diff --git a/builtin/unpack-file.c b/builtin/unpack-file.c
index 608590ada8105a2e6a8cb9d6176696b511b410f6..19200291a2632554223b1a675d5324b4682248ab 100644 (file)
--- a/builtin/unpack-file.c
+++ b/builtin/unpack-file.c
@@ -1,6 +1,4 @@
-#include "cache.h"
-#include "blob.h"
-#include "exec_cmd.h"
+#include "builtin.h"
 
 static char *create_temp_file(unsigned char *sha1)
 {