Pass eventgate context to _processEvent for error event too

This is needed in case any validate or produce functions
use the context, since they will be used for
error events as well.

Change-Id: Ibe633b59317e99a5dd2ba5586c22dbcd877b59ef

lib/eventgate.js

@@ -175,7 +175,6 @@ class EventGate {
      */
     async _processEvent(event, context = {}) {
         this.log.trace({ event }, `Validating ${this.eventRepr(event)}...`);
-
         try {
             // validate() will validate event against the schema found at the
             // schema URL returned by schemaUrlExtractor, and then return the event.
@@ -264,7 +263,8 @@ class EventGate {
                             `${failedResults.length} failed, producing ` +
                             `${errorEvents.length} error events.`
                         );
-                        P.map(errorEvents, errorEvent => this._processEvent(errorEvent));
+                        // Provide the event process context to _processEvent for error event too
+                        P.map(errorEvents, errorEvent => this._processEvent(errorEvent, context));
                     },
                     0
                 );