Update lib/bindings/http/unmarshaller.js

Co-authored-by: Lance Ball <[email protected]>

Author: grant

lib/bindings/http/unmarshaller.js

@@ -46,13 +46,12 @@ class Unmarshaller {
 
   unmarshall(payload, headers) {
     return new Promise((resolve, reject) => {
-      try {
-        if (!payload) {
-          throw new TypeError("payload is null or undefined");
-        }
-        if (!headers) {
-          throw new TypeError("headers is null or undefined");
-        }
+      if (!payload) {
+        return reject(new TypeError("payload is null or undefined"));
+      }
+      if (!headers) {
+        return reject(new TypeError("payload is null or undefined"));
+      }
 
         const sanityHeaders = Commons.sanityAndClone(headers);