Fix PyThreadState_GetID() on Python 3.7

Author: vstinner

pythoncapi_compat.h

@@ -352,7 +352,8 @@ static inline PyInterpreterState* PyInterpreterState_Get(void)
 
 
 // bpo-39947 added PyInterpreterState_Get() to Python 3.9.0a6
-#if 0x030700A1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030900A6 && !defined(PYPY_VERSION)
+#if (0x030700A1 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x030900A6 \
+        && !defined(PYPY_VERSION) && !defined(Py_LIMITED_API))
 static inline uint64_t PyThreadState_GetID(PyThreadState *tstate)
 {
     assert(tstate != _Py_NULL);