fix potential seg fault in my patch that just went in, oops

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@5473 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_agent.c

@@ -300,7 +300,7 @@ static struct agent_pvt *add_agent(char *agent, int pending)
 	}
 	
 	strncpy(p->password, password ? password : "", sizeof(p->password) - 1);
-	strncpy(p->name, !ast_strlen_zero(name) ? name : "---", sizeof(p->name) - 1);
+	strncpy(p->name, name ? name : "", sizeof(p->name) - 1);
 	strncpy(p->moh, moh, sizeof(p->moh) - 1);
 	p->ackcall = ackcall;
 	p->autologoff = autologoff;