fixed bug with undefined result code behaviour

Author: Umed Khudoiberdiev

package.json

@@ -1,7 +1,7 @@
 {
   "name": "routing-controllers",
   "private": true,
-  "version": "0.7.4",
+  "version": "0.7.5",
   "description": "Create structured, declarative and beautifully organized class-based controllers with heavy decorators usage for Express / Koa using TypeScript.",
   "license": "MIT",
   "readmeFilename": "README.md",

src/driver/express/ExpressDriver.ts

@@ -300,7 +300,7 @@ export class ExpressDriver extends BaseDriver {
         else if (result === undefined) { // throw NotFoundError on undefined response
 
             if (action.undefinedResultCode) {
-                options.response.httpCode = action.undefinedResultCode;
+                options.response.status(action.undefinedResultCode);
 
                 if (action.isJsonTyped) {
                     options.response.json();

src/driver/koa/KoaDriver.ts

@@ -250,7 +250,7 @@ export class KoaDriver extends BaseDriver {
         }
         else if (result === undefined) { // throw NotFoundError on undefined response
             if (action.undefinedResultCode) {
-                options.response.httpCode = action.undefinedResultCode;
+                options.response.status = action.undefinedResultCode;
 
                 if (action.isJsonTyped) {
                     options.response.json();