use strbuf_add_absolute_path() to add absolute paths

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

exec_cmd.c

@@ -86,11 +86,7 @@ const char *git_exec_path(void)
 static void add_path(struct strbuf *out, const char *path)
 {
 	if (path && *path) {
-		if (is_absolute_path(path))
-			strbuf_addstr(out, path);
-		else
-			strbuf_addstr(out, absolute_path(path));
-
+		strbuf_add_absolute_path(out, path);
 		strbuf_addch(out, PATH_SEP);
 	}
 }