[clang-tools-extra] fix(clang-tools-extra/**.py): fix comparison to None (PR #94013)

[Eisuke Kawashima via cfe-commits]

https://github.com/e-kwsm updated https://github.com/llvm/llvm-project/pull/94013

>From 0697c7c7976eb3c01c0f51495560ce6000176434 Mon Sep 17 00:00:00 2001
From: Eisuke Kawashima <e-kwsm at users.noreply.github.com>
Date: Sat, 11 May 2024 23:57:11 +0900
Subject: [PATCH] fix(clang-tools-extra/**.py): fix comparison to None

from PEP8 (https://peps.python.org/pep-0008/#programming-recommendations):

> Comparisons to singletons like None should always be done with is or
> is not, never the equality operators.
---
 .../docs/clang-tidy/checks/gen-static-analyzer-docs.py          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang-tools-extra/docs/clang-tidy/checks/gen-static-analyzer-docs.py b/clang-tools-extra/docs/clang-tidy/checks/gen-static-analyzer-docs.py
index 6545a3906fa50..53ecb60dec539 100644
--- a/clang-tools-extra/docs/clang-tidy/checks/gen-static-analyzer-docs.py
+++ b/clang-tools-extra/docs/clang-tidy/checks/gen-static-analyzer-docs.py
@@ -47,7 +47,7 @@ def get_checkers(checkers_td, checkers_rst):
         parent_package_ = package["ParentPackage"]
         hidden = (checker["Hidden"] != 0) or (package["Hidden"] != 0)
 
-        while parent_package_ != None:
+        while parent_package_ is not None:
             parent_package = table_entries[parent_package_["def"]]
             checker_package_prefix = (
                 parent_package["PackageName"] + "." + checker_package_prefix