worker: add missing return value in case of fatal exceptions

This adds a missing return value for the worker specific fatal
exception handler.

PR-URL: #29036
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>

lib/internal/worker.js

@@ -489,23 +489,25 @@ function setupChild(evalScript) {
  }
  debug(`[${threadId}] fatal exception caught = ${caught}`);
 
- if (!caught) {
- let serialized;
- try {
- serialized = serializeError(error);
- } catch {}
- debug(`[${threadId}] fatal exception serialized = ${!!serialized}`);
- if (serialized)
- port.postMessage({
- type: messageTypes.ERROR_MESSAGE,
- error: serialized
- });
- else
- port.postMessage({ type: messageTypes.COULD_NOT_SERIALIZE_ERROR });
- clearAsyncIdStack();
-
- process.exit();
+ if (caught) {
+ return true;
  }
+
+ let serialized;
+ try {
+ serialized = serializeError(error);
+ } catch {}
+ debug(`[${threadId}] fatal exception serialized = ${!!serialized}`);
+ if (serialized)
+ port.postMessage({
+ type: messageTypes.ERROR_MESSAGE,
+ error: serialized
+ });
+ else
+ port.postMessage({ type: messageTypes.COULD_NOT_SERIALIZE_ERROR });
+ clearAsyncIdStack();
+
+ process.exit();
  }
 }