Update bufferbuilder.js

Author: ericz

lib/bufferbuilder.js

@@ -34,8 +34,8 @@ binaryFeatures.supportsBinaryWebsockets = (function(){
 module.exports.binaryFeatures = binaryFeatures;
 var BlobBuilder = module.exports.BlobBuilder;
 if (typeof window != 'undefined') {
-BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||
-  window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;
+  BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||
+    window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;
 } 
 
 function BufferBuilder(){