From d755e9888affe68eedad0b14cda68df04733a15a Mon Sep 17 00:00:00 2001
From: Felix Schwarz <felix.schwarz@oss.schwarz.eu>
Date: Mon, 4 Dec 2023 22:19:25 +0100
Subject: [PATCH] prevent UnboundLocalError if the user did not provide a
 request body

Even though the request might be invalid, at least there is a chance
that the server response contains some helpful information.

For example a simple Connexion app responds with:
  HTTP status code 400
  Request body must not be empty
---
 openapi3/paths.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/openapi3/paths.py b/openapi3/paths.py
index f8d0f2e..e30ee07 100644
--- a/openapi3/paths.py
+++ b/openapi3/paths.py
@@ -268,6 +268,7 @@ def _request_handle_parameters(self, parameters={}):
 
     def _request_handle_body(self, data):
         if "application/json" in self.requestBody.content:
+            body = {}
             if isinstance(data, dict) or isinstance(data, list):
                 body = json.dumps(data)