fix email update on mongo

src/database/mongo/hash.js

@@ -17,6 +17,10 @@ module.exports = function(db, module) {
 	};
 
 	module.setObjectField = function(key, field, value, callback) {
+		callback = callback || helpers.noop;
+		if (!field) {
+			return callback();
+		}
 		var data = {};
 		field = helpers.fieldToString(field);
 		data[field] = value;
@@ -172,7 +176,7 @@ module.exports = function(db, module) {
 
 	module.deleteObjectField = function(key, field, callback) {
 		callback = callback || helpers.noop;
-		if (!key) {
+		if (!key || !field) {
 			return callback();
 		}
 		var data = {};

src/user/profile.js

@@ -148,7 +148,7 @@ module.exports = function(User) {
 						User.setUserField(uid, 'email', newEmail, next);
 					},
 					function(next) {
-						if (parseInt(meta.config.requireEmailConfirmation, 10) === 1) {
+						if (parseInt(meta.config.requireEmailConfirmation, 10) === 1 && newEmail) {
 							User.email.verify(uid, newEmail);
 						}
 						User.setUserField(uid, 'email:confirmed', 0, next);