Merge branch 'rs/archive-tree-in-tip-simplify'

By René Scharfe
* rs/archive-tree-in-tip-simplify:
  archive-tar: keep const in checksum calculation
  archive: simplify refname handling

archive-tar.c

@@ -139,13 +139,13 @@ static void strbuf_append_ext_header(struct strbuf *sb, const char *keyword,
 
 static unsigned int ustar_header_chksum(const struct ustar_header *header)
 {
-	char *p = (char *)header;
+	const char *p = (const char *)header;
 	unsigned int chksum = 0;
 	while (p < header->chksum)
 		chksum += *p++;
 	chksum += sizeof(header->chksum) * ' ';
 	p += sizeof(header->chksum);
-	while (p < (char *)header + sizeof(struct ustar_header))
+	while (p < (const char *)header + sizeof(struct ustar_header))
 		chksum += *p++;
 	return chksum;
 }

archive.c

@@ -254,18 +254,11 @@ static void parse_treeish_arg(const char **argv,
 	/* Remotes are only allowed to fetch actual refs */
 	if (remote) {
 		char *ref = NULL;
-		const char *refname, *colon = NULL;
+		const char *colon = strchr(name, ':');
+		int refnamelen = colon ? colon - name : strlen(name);
 
-		colon = strchr(name, ':');
-		if (colon)
-			refname = xstrndup(name, colon - name);
-		else
-			refname = name;
-
-		if (!dwim_ref(refname, strlen(refname), sha1, &ref))
-			die("no such ref: %s", refname);
-		if (refname != name)
-			free((void *)refname);
+		if (!dwim_ref(name, refnamelen, sha1, &ref))
+			die("no such ref: %.*s", refnamelen, name);
 		free(ref);
 	}