future first: switch the order of some if statements (#5206)

Since we're adding this to our contribution guidelines in
https://github.com/python/typeshed/pull/5205

stdlib/wsgiref/validate.pyi

@@ -9,12 +9,12 @@ def validator(application: WSGIApplication) -> WSGIApplication: ...
 class InputWrapper:
     input: InputStream
     def __init__(self, wsgi_input: InputStream) -> None: ...
-    if sys.version_info < (3,):
-        def read(self, size: int = ...) -> bytes: ...
-        def readline(self) -> bytes: ...
-    else:
+    if sys.version_info >= (3, 0):
         def read(self, size: int) -> bytes: ...
         def readline(self, size: int = ...) -> bytes: ...
+    else:
+        def read(self, size: int = ...) -> bytes: ...
+        def readline(self) -> bytes: ...
     def readlines(self, hint: int = ...) -> bytes: ...
     def __iter__(self) -> Iterable[bytes]: ...
     def close(self) -> NoReturn: ...
@@ -44,9 +44,9 @@ class IteratorWrapper:
     check_start_response: Optional[bool]
     def __init__(self, wsgi_iterator: Iterator[bytes], check_start_response: Optional[bool]) -> None: ...
     def __iter__(self) -> IteratorWrapper: ...
-    if sys.version_info < (3,):
-        def next(self) -> bytes: ...
-    else:
+    if sys.version_info >= (3, 0):
         def __next__(self) -> bytes: ...
+    else:
+        def next(self) -> bytes: ...
     def close(self) -> None: ...
     def __del__(self) -> None: ...