dont allow banned users to flag

src/socket.io/posts/flag.js

@@ -47,7 +47,7 @@ module.exports = function(SocketPosts) {
 						privileges.categories.isAdminOrMod(post.topic.cid, socket.uid, next);
 					},
 					userData: function(next) {
-						user.getUserFields(socket.uid, ['username', 'reputation'], next);
+						user.getUserFields(socket.uid, ['username', 'reputation', 'banned'], next);
 					}
 				}, next);
 			},
@@ -56,6 +56,10 @@ module.exports = function(SocketPosts) {
 					return next(new Error('[[error:not-enough-reputation-to-flag]]'));
 				}
 
+				if (parseInt(user.banned, 10) === 1) {
+					return next(new Error('[[error:user-banned]]'));
+				}
+
 				flaggingUser = user.userData;
 				flaggingUser.uid = socket.uid;