bpo-8677: use PY_SSIZE_T_CLEAN in sqlite (GH-12434)

Modules/_sqlite/cursor.c uses "y#" format.
It didn't declare PY_SSIZE_T_CLEAN, but the argument is Py_ssize_t already.
diff --git a/Modules/_sqlite/cache.h b/Modules/_sqlite/cache.h
index a133903..5290109 100644
--- a/Modules/_sqlite/cache.h
+++ b/Modules/_sqlite/cache.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_CACHE_H
 #define PYSQLITE_CACHE_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 /* The LRU cache is implemented as a combination of a doubly-linked with a
diff --git a/Modules/_sqlite/connection.h b/Modules/_sqlite/connection.h
index 5fb410a..4e9d94c 100644
--- a/Modules/_sqlite/connection.h
+++ b/Modules/_sqlite/connection.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_CONNECTION_H
 #define PYSQLITE_CONNECTION_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pythread.h"
 #include "structmember.h"
diff --git a/Modules/_sqlite/cursor.h b/Modules/_sqlite/cursor.h
index 28bbd5f..4a20e75 100644
--- a/Modules/_sqlite/cursor.h
+++ b/Modules/_sqlite/cursor.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_CURSOR_H
 #define PYSQLITE_CURSOR_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 #include "statement.h"
diff --git a/Modules/_sqlite/microprotocols.h b/Modules/_sqlite/microprotocols.h
index 99ff6f6..5418c2b 100644
--- a/Modules/_sqlite/microprotocols.h
+++ b/Modules/_sqlite/microprotocols.h
@@ -26,6 +26,7 @@
 #ifndef PSYCOPG_MICROPROTOCOLS_H
 #define PSYCOPG_MICROPROTOCOLS_H 1
 
+#define PY_SSIZE_T_CLEAN
 #include <Python.h>
 
 /** the names of the three mandatory methods **/
diff --git a/Modules/_sqlite/module.h b/Modules/_sqlite/module.h
index 6f90934..3185ec9 100644
--- a/Modules/_sqlite/module.h
+++ b/Modules/_sqlite/module.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_MODULE_H
 #define PYSQLITE_MODULE_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 #define PYSQLITE_VERSION "2.6.0"
diff --git a/Modules/_sqlite/prepare_protocol.h b/Modules/_sqlite/prepare_protocol.h
index 924e162..3998a55 100644
--- a/Modules/_sqlite/prepare_protocol.h
+++ b/Modules/_sqlite/prepare_protocol.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_PREPARE_PROTOCOL_H
 #define PYSQLITE_PREPARE_PROTOCOL_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 typedef struct
diff --git a/Modules/_sqlite/row.h b/Modules/_sqlite/row.h
index d014109..4ad506f 100644
--- a/Modules/_sqlite/row.h
+++ b/Modules/_sqlite/row.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_ROW_H
 #define PYSQLITE_ROW_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 typedef struct _Row
diff --git a/Modules/_sqlite/statement.h b/Modules/_sqlite/statement.h
index fd88d7d..5002f02 100644
--- a/Modules/_sqlite/statement.h
+++ b/Modules/_sqlite/statement.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_STATEMENT_H
 #define PYSQLITE_STATEMENT_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 
 #include "connection.h"
diff --git a/Modules/_sqlite/util.h b/Modules/_sqlite/util.h
index abaefd8..6261911 100644
--- a/Modules/_sqlite/util.h
+++ b/Modules/_sqlite/util.h
@@ -23,6 +23,7 @@
 
 #ifndef PYSQLITE_UTIL_H
 #define PYSQLITE_UTIL_H
+#define PY_SSIZE_T_CLEAN
 #include "Python.h"
 #include "pythread.h"
 #include "sqlite3.h"