tone down the detached head warning

diff --git a/builtin-diff-stages.c b/builtin-diff-stages.c
index 9c62702941569511a149eba89a8be2b478f04b70..70bb89808d2296246edbafb8378aa651c3382261 100644 (file)
--- a/builtin-diff-stages.c
+++ b/builtin-diff-stages.c
@@ -46,7 +46,7 @@ static void diff_stages(int stage1, int stage2, const char **pathspec)
                else if (!two)
                        diff_addremove(&diff_options, '-', ntohl(one->ce_mode),
                                       one->sha1, name, NULL);
-               else if (memcmp(one->sha1, two->sha1, 20) ||
+               else if (hashcmp(one->sha1, two->sha1) ||
                         (one->ce_mode != two->ce_mode) ||
                         diff_options.find_copies_harder)
                        diff_change(&diff_options,
@@ -55,10 +55,9 @@ static void diff_stages(int stage1, int stage2, const char **pathspec)
        }
 }
 
-int cmd_diff_stages(int ac, const char **av, char **envp)
+int cmd_diff_stages(int ac, const char **av, const char *prefix)
 {
        int stage1, stage2;
-       const char *prefix = setup_git_directory();
        const char **pathspec = NULL;
 
        git_config(git_default_config); /* no "diff" UI options */