tweaks to topic locking

src/threadTools.js

@@ -56,12 +56,14 @@ var RDB = require('./redis.js'),
 				status: 'ok'
 			});
 
+			if (socket) {
 				socket.emit('api:topic.lock', {
 					status: 'ok',
 					tid: tid
 				});
 			}
 		}
+	}
 
 	ThreadTools.unlock = function(tid, socket) {
 		topics.setTopicField(tid, 'locked', 0);
@@ -72,12 +74,14 @@ var RDB = require('./redis.js'),
 				status: 'ok'
 			});
 
+			if (socket) {
 				socket.emit('api:topic.unlock', {
 					status: 'ok',
 					tid: tid
 				});
 			}
 		}
+	}
 
 	ThreadTools.delete = function(tid, callback) {
 		topics.delete(tid);
@@ -129,12 +133,14 @@ var RDB = require('./redis.js'),
 				status: 'ok'
 			});
 
+			if (socket) {
 				socket.emit('api:topic.pin', {
 					status: 'ok',
 					tid: tid
 				});
 			}
 		}
+	}
 
 	ThreadTools.unpin = function(tid, socket) {
 		topics.setTopicField(tid, 'pinned', 0);
@@ -147,12 +153,14 @@ var RDB = require('./redis.js'),
 				status: 'ok'
 			});
 
+			if (socket) {
 				socket.emit('api:topic.unpin', {
 					status: 'ok',
 					tid: tid
 				});
 			}
 		}
+	}
 
 	ThreadTools.move = function(tid, cid, socket) {