Fix conditional code in __Pyx_PyType_Ready() for Py3.10.

Cython/Utility/ExtensionTypes.c

@@ -126,10 +126,11 @@ static int __Pyx_PyType_Ready(PyTypeObject *t) {
 #if PY_VERSION_HEX >= 0x03050000
         t->tp_flags &= ~Py_TPFLAGS_HEAPTYPE;
 
-        if (gc_was_enabled) {
-#if PY_VERSION_HEX >= 0x030A00b1
+    #if PY_VERSION_HEX >= 0x030A00b1
+        if (gc_was_enabled)
             PyGC_Enable();
-#else
+    #else
+        if (gc_was_enabled) {
             PyObject *t, *v, *tb;
             PyErr_Fetch(&t, &v, &tb);
             ret = __Pyx_PyObject_CallMethod0(gc, PYUNICODE("enable"));
@@ -146,7 +147,7 @@ static int __Pyx_PyType_Ready(PyTypeObject *t) {
             }
         }
         Py_DECREF(gc);
-#endif
+    #endif
     }
 #endif