Apply suggestions from code review

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

Author: ZeroIntensity

Doc/library/sys.rst

@@ -2160,7 +2160,6 @@ always available. Unless explicitly noted otherwise, all variables are read-only
    exceptions are handled.
 
    .. versionchanged:: next
-
       Exceptions are now printed with colorful text.
 
    .. seealso::

Python/errors.c

@@ -1444,7 +1444,7 @@ make_unraisable_hook_args(PyThreadState *tstate, PyObject *exc_type,
 
    It can be called to log the exception of a custom sys.unraisablehook.
 
-   This assumes 'file' neither NULL nor None.
+   This assumes 'file' is neither NULL nor None.
  */
 static int
 write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
@@ -1501,7 +1501,8 @@ write_unraisable_exc_file(PyThreadState *tstate, PyObject *exc_type,
             // Nothing else to do
             return 0;
         }
-    } else {
+    }
+    else {
         Py_XDECREF(print_exception_fn);
     }
     // traceback module failed, fall back to pure C