[empathy] Fix /join command with one channel (#607306)

[Guillaume Desmottes <gdesmott src gnome org>]

commit abe61c3e3f10ceeb911cfe6ee1ae16617adfac70
Author: Thomas Meire <blackskad gmail com>
Date:   Mon Jan 18 14:53:23 2010 +0000

    Fix /join command with one channel (#607306)

 libempathy-gtk/empathy-chat.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libempathy-gtk/empathy-chat.c b/libempathy-gtk/empathy-chat.c
index 95e9ecb..2189899 100644
--- a/libempathy-gtk/empathy-chat.c
+++ b/libempathy-gtk/empathy-chat.c
@@ -704,7 +704,7 @@ chat_command_join (EmpathyChat *chat,
 
 	while (rooms[i] != NULL) {
 		/* ignore empty strings */
-		if (EMP_STR_EMPTY (rooms[i])) {
+		if (!EMP_STR_EMPTY (rooms[i])) {
 			TpConnection *connection;
 
 			connection = empathy_tp_chat_get_connection (priv->tp_chat);