error check

src/groups.js

@@ -141,8 +141,14 @@ var async = require('async'),
 	};
 
 	Groups.search = function(query, options, callback) {
-		if (query.length) {
+		if (!query) {
+			return callback(null, []);
+		}
+
 		db.getSetMembers('groups', function(err, groups) {
+			if (err) {
+				return callback(err);
+			}
 			groups = groups.filter(function(groupName) {
 				return groupName.match(new RegExp(utils.escapeRegexChars(query), 'i'));
 			});
@@ -153,9 +159,6 @@ var async = require('async'),
 				callback(err, internals.filterGroups(groups, options));
 			});
 		});
-		} else {
-			callback(null, []);
-		}
 	};
 
 	Groups.isMember = function(uid, groupName, callback) {