gifn-apply: minor refactoring re: TYPE_CHECKING

Change-Id: Ie6909010e27107aaa0ee4bca1eeca8b68776d4da
diff --git a/tools/git-if-needed/python/gifn_apply/gifn.py b/tools/git-if-needed/python/gifn_apply/gifn.py
index 92f20dc..bd53b19 100644
--- a/tools/git-if-needed/python/gifn_apply/gifn.py
+++ b/tools/git-if-needed/python/gifn_apply/gifn.py
@@ -6,12 +6,12 @@
 
 import shlex
 import subprocess  # noqa: S404
-from typing import TYPE_CHECKING
+import typing
 
 from . import defs
 
 
-if TYPE_CHECKING:
+if typing.TYPE_CHECKING:
     import pathlib