fix error when end sent before request

There was situation when the handler receives 'end' message before
initial 'header' request. The client was fixed warn and continue instead
of crash.

client/client.js

@@ -157,7 +157,12 @@ class Channel extends Object {
 
   on_end() {
     debug(` :> ${this.id} end`);
-    this.request.end();
+    if (this.request) {
+      this.request.end();
+    } else {
+      warning(`Received end before I was able to create a request.`);
+      setTimeout(()=>console.log(`Request: ${this.request}`), 100);
+    }
   }
 
   onHttpData(chunk) {

package.json

@@ -1,6 +1,6 @@
 {
   "name": "karmen_ws",
-  "version": "1.0.3",
+  "version": "1.0.4",
   "description": "",
   "main": "client",
   "scripts": {