fix zip(*...) -> Any problem

Author: tyralla

mypy/checkexpr.py

@@ -2701,7 +2701,8 @@ def check_overload_call(
                 # Record if we succeeded. Next we need to see if maybe normal procedure
                 # gives a narrower type.
                 if unioned_return:
-                    returns, inferred_types = zip(*unioned_return)
+                    returns = tuple(u[0] for u in unioned_return)
+                    inferred_types = tuple(u[1] for u in unioned_return)
                     # Note that we use `combine_function_signatures` instead of just returning
                     # a union of inferred callables because for example a call
                     # Union[int -> int, str -> str](Union[int, str]) is invalid and