Fix new ruff check --preview warnings

Author: arichardson

pycheribuild/projects/cross/cheribsd.py

@@ -192,7 +192,7 @@ def _prepare_kernconf_context(self, platforms: "set[ConfigPlatform]", kernel_abi
             ctx["kabi_name"] = self.get_kabi_name(kernel_abi)
         if "platform_name" in ctx:
             ctx["platform_name"] = self.get_platform_name(platforms)
-        if "nocaprevoke" in ctx and kwargs.get("nocaprevoke", False):
+        if "nocaprevoke" in ctx and kwargs.get("nocaprevoke"):
             ctx["nocaprevoke"] = "NOCAPREVOKE"
         if "flags" in ctx:
             flag_list = self.get_flag_names(platforms, kernel_abi, **kwargs)

pycheribuild/projects/simple_project.py

@@ -640,10 +640,10 @@ def _recursive_dependencies_impl(
     @classmethod
     def cached_full_dependencies(cls) -> "list[Target]":
         # look only in __dict__ to avoid parent class lookup
-        _cached: "Optional[list[Target]]" = cls.__dict__.get("_cached_full_deps", None)
-        if _cached is None:
+        cached: "Optional[list[Target]]" = cls.__dict__.get("_cached_full_deps", None)
+        if cached is None:
             raise ValueError("cached_full_dependencies called before value was cached")
-        return _cached
+        return cached
 
     @classmethod
     def _cache_full_dependencies(cls, config, *, allow_already_cached=False) -> None: