Fixup: do not close the response before anchor-checking has been perf…

…ormed

sphinx/builders/linkcheck.py

@@ -318,9 +318,9 @@ def check_uri() -> tuple[str, str, int]:
                     # Read the whole document and see if #anchor exists
                     response = requests.get(req_url, stream=True, config=self.config,
                                             auth=auth_info, **kwargs)
-                    response.close()  # no HTTP body reads required; close the response
                     response.raise_for_status()
                     found = check_anchor(response, unquote(anchor))
+                    response.close()  # HTTP body reads complete; close the response
 
                     if not found:
                         raise Exception(__("Anchor '%s' not found") % anchor)