Validate empty request body fix

Author: p1c2u

openapi_core/validation/request/validators.py

@@ -113,6 +113,8 @@ def _iter_errors(
 
         try:
             self._get_body(request.body, request.content_type, operation)
+        except MissingRequestBody:
+            pass
         except RequestBodyValidationError as exc:
             yield exc
 

tests/integration/test_petstore.py

@@ -1973,6 +1973,8 @@ def test_delete_tags_no_requestbody(self, spec):
             path_pattern=path_pattern,
         )
 
+        validate_request(request, spec=spec)
+
         result = unmarshal_request(
             request,
             spec=spec,