i18n: make warn_dangling_symref() automatically append \n

This helps remove \n from translatable strings
Signed-off-by: NNguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

builtin/fetch.c

@@ -537,8 +537,8 @@ static int prune_refs(struct refspec *refs, int ref_count, struct ref *ref_map)
 	int result = 0;
 	struct ref *ref, *stale_refs = get_stale_heads(refs, ref_count, ref_map);
 	const char *dangling_msg = dry_run
-		? _("   (%s will become dangling)\n")
-		: _("   (%s has become dangling)\n");
+		? _("   (%s will become dangling)")
+		: _("   (%s has become dangling)");
 
 	for (ref = stale_refs; ref; ref = ref->next) {
 		if (!dry_run)

builtin/remote.c

@@ -1260,8 +1260,8 @@ static int prune_remote(const char *remote, int dry_run)
 	int result = 0, i;
 	struct ref_states states;
 	const char *dangling_msg = dry_run
-		? " %s will become dangling!\n"
-		: " %s has become dangling!\n";
+		? " %s will become dangling!"
+		: " %s has become dangling!";
 
 	memset(&states, 0, sizeof(states));
 	get_remote_ref_states(remote, &states, GET_REF_STATES);

refs.c

@@ -395,6 +395,7 @@ static int warn_if_dangling_symref(const char *refname, const unsigned char *sha
 		return 0;
 
 	fprintf(d->fp, d->msg_fmt, refname);
+	fputc('\n', d->fp);
 	return 0;
 }