Remove unused variables.

Author: ZeroIntensity

Modules/_testcapimodule.c

@@ -2607,7 +2607,6 @@ test_interpreter_refs(PyObject *self, PyObject *unused)
 static PyObject *
 test_thread_state_ensure_nested(PyObject *self, PyObject *unused)
 {
-    PyInterpreterState *interp = PyInterpreterState_Get();
     PyThreadState *save_tstate = PyThreadState_Swap(NULL);
     assert(PyGILState_GetThisThreadState() == save_tstate);
     PyInterpreterRef ref = get_strong_ref();
@@ -2647,6 +2646,7 @@ test_thread_state_ensure_nested(PyObject *self, PyObject *unused)
 
     assert(PyThreadState_GetUnchecked() == NULL);
     PyInterpreterRef_Close(ref);
+    Py_RETURN_NONE;
 }
 
 static PyMethodDef TestMethods[] = {

Modules/_testinternalcapi.c

@@ -2352,6 +2352,8 @@ test_interp_refcount(PyObject *self, PyObject *unused)
     PyInterpreterRef refs[NUM_REFS];
     for (int i = 0; i < NUM_REFS; ++i) {
         int res = PyInterpreterRef_Get(&refs[i]);
+        (void)res;
+        assert(res == 0);
         assert(_PyInterpreterState_Refcount(interp) == i + 1);
     }
 
@@ -2377,6 +2379,7 @@ test_interp_weakref_incref(PyObject *self, PyObject *unused)
 
     for (int i = 0; i < NUM_REFS; ++i) {
         int res = PyInterpreterWeakRef_AsStrong(wref, &refs[i]);
+        (void)res;
         assert(res == 0);
         assert(PyInterpreterRef_AsInterpreter(refs[i]) == interp);
         assert(_PyInterpreterState_Refcount(interp) == i + 1);