Fix

[ 1124295 ] Function's __name__ no longer accessible in restricted mode

which I introduced with a bit of mindless copy-paste when making
__name__ writable.  You can't assign to __name__ in restricted mode,
which I'm going to pretend was intentional :)

Lib/test/test_funcattrs.py

@@ -276,6 +276,9 @@ def test_func_name():
     verify(f.func_name == "h")
     cantset(f, "func_globals", 1)
     cantset(f, "__name__", 1)
+    # test that you can access func.__name__ in restricted mode
+    s = """def f(): pass\nf.__name__"""
+    exec s in {'__builtins__':{}}
 
 
 def test_func_code():

Objects/funcobject.c

@@ -262,8 +262,6 @@ func_set_code(PyFunctionObject *op, PyObject *value)
 static PyObject *
 func_get_name(PyFunctionObject *op)
 {
-	if (restricted())
-		return NULL;
 	Py_INCREF(op->func_name);
 	return op->func_name;
 }