Process wizard redirection when status is not set

Whenever there the controller does not specify any
http status, we assume that everything is OK and if
there is another wizard redirection then gets processed.

Change-Id: Ib6478c08c30216238fbbeeb2e8d1bf1575c9027f
diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/VelocityControllerServlet.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/VelocityControllerServlet.java
index c68d82a..35744f9 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/VelocityControllerServlet.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/VelocityControllerServlet.java
@@ -89,7 +89,8 @@
     WrappedResponse wrappedResp = new WrappedResponse(resp);
     controller.doAction(user, hubLogin, req, wrappedResp, errorsProvider.get());
 
-    if (wrappedResp.getStatus() == HttpStatus.SC_OK) {
+    if (wrappedResp.getStatus() == 0 ||
+        wrappedResp.getStatus() == HttpStatus.SC_OK) {
       redirectToNextStep(req, resp);
     }
   }