bpo-39494: Remove extra null terminators from kwlist vars (GH-18267)

Author: alexhenrie

Modules/_sqlite/cursor.c

@@ -773,7 +773,7 @@ PyObject* pysqlite_cursor_fetchone(pysqlite_Cursor* self, PyObject* args)
 
 PyObject* pysqlite_cursor_fetchmany(pysqlite_Cursor* self, PyObject* args, PyObject* kwargs)
 {
-    static char *kwlist[] = {"size", NULL, NULL};
+    static char *kwlist[] = {"size", NULL};
 
     PyObject* row;
     PyObject* list;

Modules/_sqlite/module.c

@@ -105,7 +105,7 @@ RAM instead of on disk.");
 static PyObject* module_complete(PyObject* self, PyObject* args, PyObject*
         kwargs)
 {
-    static char *kwlist[] = {"statement", NULL, NULL};
+    static char *kwlist[] = {"statement", NULL};
     char* statement;
 
     PyObject* result;
@@ -135,7 +135,7 @@ Checks if a string contains a complete SQL statement. Non-standard.");
 static PyObject* module_enable_shared_cache(PyObject* self, PyObject* args, PyObject*
         kwargs)
 {
-    static char *kwlist[] = {"do_enable", NULL, NULL};
+    static char *kwlist[] = {"do_enable", NULL};
     int do_enable;
     int rc;