[BUG] [C++] [cpp-pistache-server] Generated code does not compile because of a missing semicolon

Created by: shayan-eftekhari

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

A recent pull request in the pistache repository introduced a statement in which a semicolon is missed.

openapi-generator version

openapi-generator-cli 5.2.1-SNAPSHOT commit : d0788cdb built : 2021-08-10T22:22:08+02:00

OpenAPI declaration file content or url

https://github.com/OAI/OpenAPI-Specification/blob/main/examples/v3.0/petstore.yaml

Generation Details

java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar generate -g cpp-pistache-server -i ./petstore.yaml -o petstore

Steps to reproduce

1. Clone and build latest master
2. Generate any cpp-pistache-server
3. Run cmake build

Related issues/PRs

N/A

Suggest a fix

Add a semicolon to the following line will fix the issue: https://github.com/OpenAPITools/openapi-generator/blob/bd8efe2f91761df866489c16e1c17870a8c88c5f/modules/openapi-generator/src/main/resources/cpp-pistache-server/api-source.mustache#L45