Introduce equals_our_barejid()

Instead of always repeating the same pattern, introduce a helper function.

Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>

src/xmpp/xmpp.h

@@ -195,6 +195,7 @@ void connection_set_presence_msg(const char* const message);
 const char* connection_get_fulljid(void);
 const Jid* connection_get_jid(void);
 const char* connection_get_barejid(void);
+gboolean equals_our_barejid(const char* cmp);
 char* connection_get_user(void);
 char* connection_create_uuid(void);
 void connection_free_uuid(char* uuid);