CAMEL-13072 remove the exception block
diff --git a/camel-core/src/main/java/org/apache/camel/impl/DefaultUnitOfWork.java b/camel-core/src/main/java/org/apache/camel/impl/DefaultUnitOfWork.java
index 3f48ac9..dd95259 100644
--- a/camel-core/src/main/java/org/apache/camel/impl/DefaultUnitOfWork.java
+++ b/camel-core/src/main/java/org/apache/camel/impl/DefaultUnitOfWork.java
@@ -330,12 +330,7 @@
     }
 
     public RouteContext popRouteContext() {
-        try {
-            return routeContextStack.pop();
-        } catch (NoSuchElementException e) {
-            // ignore and return null
-        }
-        return null;
+        return routeContextStack.pollFirst();
     }
 
     public AsyncCallback beforeProcess(Processor processor, Exchange exchange, AsyncCallback callback) {