Fix compiler errors for unused variables (pythonGH-26601)

Author: pablogsal

Modules/_sqlite/connection.c

@@ -276,7 +276,7 @@ connection_close(pysqlite_Connection *self)
 {
     if (self->db) {
         int rc = sqlite3_close_v2(self->db);
-        assert(rc == SQLITE_OK);
+        assert(rc == SQLITE_OK), (void)rc;
         self->db = NULL;
     }
 }

Python/compile.c

@@ -7192,6 +7192,7 @@ compute_localsplus_info(struct compiler *c,
                         PyObject *names, _PyLocalsPlusKinds kinds)
 {
     int nlocalsplus = (int)PyTuple_GET_SIZE(names);
+    (void)nlocalsplus; // Avoid compiler errors for unused variable
 
     PyObject *k, *v;
     Py_ssize_t pos = 0;