Make mypy happy

The-Compiler · The-Compiler · commit 70d83cb627eb · 2022-03-26T11:10:07.000+01:00
It seems to only check the true condition based on the given Python version in the config... See python/mypy#12286
diff --git a/qutebrowser/misc/utilcmds.py b/qutebrowser/misc/utilcmds.py
@@ -128,7 +128,7 @@ def debug_cache_stats() -> None:
     """Print LRU cache stats."""
     if sys.version_info < (3, 9):
         raise cmdutils.CommandError('debugcachestats not supported on python < 3.9')
-    debugcachestats.debug_cache_stats()
+    debugcachestats.debug_cache_stats()  # type: ignore[unreachable]
 
 
 @cmdutils.register(debug=True)
