do not assume empty response for null length #163

Author: ehennum

lib/mlrest.js

@@ -493,7 +493,7 @@ function responseDispatcher(response) {
   var inputHeader = isMultipart ? responseBoundary : responseType;
 
   var responseLength = response.headers['content-length'];
-  var isEmpty = (valcheck.isNullOrUndefined(responseLength)|| responseLength === '0');
+  var isEmpty = (!valcheck.isNullOrUndefined(responseLength) && responseLength === '0');
 
   var expectedType = operation.responseType;