Clear sqlite3 stmt resources in stmt_clear()

Author: Erlend E. Aasland

Modules/_sqlite/statement.c

@@ -373,14 +373,6 @@ stmt_dealloc(pysqlite_Statement *self)
 {
     PyTypeObject *tp = Py_TYPE(self);
     PyObject_GC_UnTrack(self);
-
-    if (self->st) {
-        Py_BEGIN_ALLOW_THREADS
-        sqlite3_finalize(self->st);
-        Py_END_ALLOW_THREADS
-        self->st = NULL;
-    }
-
     tp->tp_clear((PyObject *)self);
     tp->tp_free(self);
     Py_DECREF(tp);
@@ -389,6 +381,13 @@ stmt_dealloc(pysqlite_Statement *self)
 static int
 stmt_clear(pysqlite_Statement *self)
 {
+    if (self->st) {
+        Py_BEGIN_ALLOW_THREADS
+        sqlite3_finalize(self->st);
+        Py_END_ALLOW_THREADS
+        self->st = 0;
+    }
+
     Py_CLEAR(self->sql);
     if (self->in_weakreflist != NULL) {
         PyObject_ClearWeakRefs((PyObject*)self);