Use git_pathdup instead of xstrdup(git_path(...))

Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin-tag.c b/builtin-tag.c
index f2853d0..6c6c351 100644
--- a/builtin-tag.c
+++ b/builtin-tag.c
@@ -283,7 +283,7 @@
 		int fd;
 
 		/* write the template message before editing: */
-		path = xstrdup(git_path("TAG_EDITMSG"));
+		path = git_pathdup("TAG_EDITMSG");
 		fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
 		if (fd < 0)
 			die("could not create file '%s': %s",