chore: changes to pass the tests

Author: LeoLomardo

mypy/messages.py

@@ -782,10 +782,11 @@ def incompatible_argument(
             simple_message = self.prefer_simple_messages() and not decorator_context
 
             if decorator_context:
+                decorator = cast(Decorator, outer_context)
                 arg_type_str, expected_type_str = format_type_distinctly(
                     arg_type, expected_type, bare=True, options=self.options
                 )
-                func_name = outer_context.func.name
+                func_name = decorator.func.name
                 msg = (
                     f'Decorated function "{func_name}" has incompatible type '
                     f"{quote_type_string(arg_type_str)}; expected "

test-data/unit/check-functions.test

@@ -3534,7 +3534,7 @@ def decorator2(f: Callable[P, None]) -> Callable[
 def key2(x: int) -> None:
     ...
 
-@decorator2(key2)  # E: Argument 1 has incompatible type "def foo2(y: int) -> Coroutine[Any, Any, None]"; expected "def (x: int) -> Awaitable[None]"
+@decorator2(key2)  # E: Decorated function "foo2" has incompatible type "def foo2(y: int) -> Coroutine[Any, Any, None]"; expected "def (x: int) -> Awaitable[None]"
 async def foo2(y: int) -> None:
     ...