Merge branch 'ef/mailinfo-short-name'

We historically rejected a very short string as an author name
while accepting a patch e-mail, which has been loosened.

* ef/mailinfo-short-name:
  mailinfo: don't discard names under 3 characters

mailinfo.c

@@ -19,7 +19,7 @@ static void cleanup_space(struct strbuf *sb)
 static void get_sane_name(struct strbuf *out, struct strbuf *name, struct strbuf *email)
 {
 	struct strbuf *src = name;
-	if (name->len < 3 || 60 < name->len || strpbrk(name->buf, "@<>"))
+	if (!name->len || 60 < name->len || strpbrk(name->buf, "@<>"))
 		src = email;
 	else if (name == out)
 		return;