Update cntk.js

source/cntk.js

@@ -27,32 +27,34 @@ cntk.ModelFactory = class {
         return cntk.Metadata.open(context).then((metadata) => {
             switch (match) {
                 case 'cntk.v1': {
+                    let obj = null;
                     try {
                         const stream = context.stream;
                         const buffer = stream.peek();
-                        const obj = new cntk_v1.ComputationNetwork(buffer);
-                        return new cntk.Model(metadata, 1, obj);
+                        obj = new cntk_v1.ComputationNetwork(buffer);
                     }
                     catch (error) {
                         const message = error && error.message ? error.message : error.toString();
                         throw new cntk.Error('File format is not CNTK v1 (' + message.replace(/\.$/, '') + ').');
                     }
+                    return new cntk.Model(metadata, 1, obj);
                 }
                 case 'cntk.v2': {
                     return context.require('./cntk-proto').then(() => {
+                        let obj = null;
                         try {
                             cntk_v2 = protobuf.get('cntk').CNTK.proto;
                             cntk_v2.PoolingType = { 0: 'Max', 1: 'Average' };
                             const stream = context.stream;
                             const reader = protobuf.BinaryReader.open(stream);
                             const dictionary = cntk_v2.Dictionary.decode(reader);
-                            const obj = cntk.ModelFactory._convertDictionary(dictionary);
-                            return new cntk.Model(metadata, 2, obj);
+                            obj = cntk.ModelFactory._convertDictionary(dictionary);
                         }
                         catch (error) {
                             const message = error && error.message ? error.message : error.toString();
                             throw new cntk.Error('File format is not cntk.Dictionary (' + message.replace(/\.$/, '') + ').');
                         }
+                        return new cntk.Model(metadata, 2, obj);
                     });
                 }
                 default: {