Make sure callback_end tracepoint is triggered in AnyServiceCallback (#2670)

Signed-off-by: Christophe Bedard <[email protected]>

Author: christophebedard-apexai

rclcpp/include/rclcpp/any_service_callback.hpp

@@ -165,11 +165,13 @@ class AnyServiceCallback
     if (std::holds_alternative<SharedPtrDeferResponseCallback>(callback_)) {
       const auto & cb = std::get<SharedPtrDeferResponseCallback>(callback_);
       cb(request_header, std::move(request));
+      TRACETOOLS_TRACEPOINT(callback_end, static_cast<const void *>(this));
       return nullptr;
     }
     if (std::holds_alternative<SharedPtrDeferResponseCallbackWithServiceHandle>(callback_)) {
       const auto & cb = std::get<SharedPtrDeferResponseCallbackWithServiceHandle>(callback_);
       cb(service_handle, request_header, std::move(request));
+      TRACETOOLS_TRACEPOINT(callback_end, static_cast<const void *>(this));
       return nullptr;
     }
     // auto response = allocate_shared<typename ServiceT::Response, Allocator>();