builtin remote rm: remove symbolic refs, too

"git remote add" can add a symbolic ref "HEAD", and "rm" should delete
it, too.

Noticed by Teemu Likonen.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin-remote.c

@@ -264,6 +264,11 @@ static int add_branch_for_removal(const char *refname,
 
 	if (!prefixcmp(refname, branches->prefix)) {
 		struct path_list_item *item;
+
+		/* make sure that symrefs are deleted */
+		if (flags & REF_ISSYMREF)
+			return unlink(git_path(refname));
+
 		item = path_list_append(refname, branches->branches);
 		item->util = xmalloc(20);
 		hashcpy(item->util, sha1);

t/t5505-remote.sh

@@ -80,6 +80,7 @@ test_expect_success 'add another remote' '
 test_expect_success 'remove remote' '
 (
 	cd test &&
+	git symbolic-ref refs/remotes/second/HEAD refs/remotes/second/master &&
 	git remote rm second
 )
 '