fix: failed type check

mypy/semanal.py

@@ -6415,21 +6415,20 @@ def lookup_fully_qualified_or_none(self, fullname: str) -> SymbolTableNode | Non
         if module not in self.modules:
             # Check if there's nested module A.B.C
             splitted = fullname.rsplit(".")
-            module, name = splitted[0], splitted[1:]
+            module, names = splitted[0], splitted[1:]
             # If module still not in modules, return None
             if module not in self.modules:
                 return None
             filenode = self.modules[module]
-            result = filenode.names.get(name[0])
+            result = filenode.names.get(names[0])
 
             if result is None and self.is_incomplete_namespace(module):
                 # TODO: More explicit handling of incomplete refs?
                 self.record_incomplete_ref()
 
-            for part in name[1:]:
+            for part in names[1:]:
                 if result is not None and isinstance(result.node, TypeInfo):
-                    filenode = result.node
-                    result = filenode.names.get(part)
+                    result = result.node.names.get(part)
                 else:
                     return None
             return result