git am: Display some help text when patch is empty

diff --git a/tag.h b/tag.h
index 7a0cb0070d46ba8c49d71029dc0704188805ea62..47662724a6d7d07eeeacd5c8528d94d750ecf878 100644 (file)
--- a/tag.h
+++ b/tag.h
@@ -9,7 +9,7 @@ struct tag {
        struct object object;
        struct object *tagged;
        char *tag;
-       char *signature; /* not actually implemented */
+       unsigned long date;
 };
 
 extern struct tag *lookup_tag(const unsigned char *sha1);