fix crash in sqlite when executing with bound stream param

rel #70862

ext/sqlite3/sqlite3.c

@@ -1527,7 +1527,7 @@ PHP_METHOD(sqlite3stmt, execute)
 				case SQLITE_BLOB:
 				{
 					php_stream *stream = NULL;
-					zend_string *buffer;
+					zend_string *buffer = NULL;
 					if (Z_TYPE_P(parameter) == IS_RESOURCE) {
 						php_stream_from_zval_no_verify(stream, parameter);
 						if (stream == NULL) {
@@ -1540,10 +1540,11 @@ PHP_METHOD(sqlite3stmt, execute)
 						buffer = Z_STR_P(parameter);
 					}
 
-					sqlite3_bind_blob(stmt_obj->stmt, param->param_number, ZSTR_VAL(buffer), ZSTR_LEN(buffer), SQLITE_TRANSIENT);
-
-					if (stream) {
+					if (buffer) {
+						sqlite3_bind_blob(stmt_obj->stmt, param->param_number, ZSTR_VAL(buffer), ZSTR_LEN(buffer), SQLITE_TRANSIENT);
 						zend_string_release(buffer);
+					} else {
+						sqlite3_bind_null(stmt_obj->stmt, param->param_number);
 					}
 					break;
 				}

ext/sqlite3/tests/sqlite3_blob_bind_resource.phpt

@@ -0,0 +1,39 @@
+--TEST--
+SQLite3::execute() with a resource bound for blob param
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--FILE--
+<?php
+
+require_once(dirname(__FILE__) . '/new_db.inc');
+require_once(dirname(__FILE__) . '/stream_test.inc');
+
+var_dump($db->exec('CREATE TABLE test (id STRING, data BLOB)'));
+$insert_stmt = $db->prepare("INSERT INTO test (id, data) VALUES (1, ?)");
+
+
+class HelloWrapper {
+	public function stream_open() { return true; }
+	public function stream_eof() { return true; }
+	public function stream_read() { return NULL; }
+	public function stream_stat() { return array(); }
+}
+stream_wrapper_register("hello", "HelloWrapper");
+
+$f = fopen("hello://there", "r");
+
+var_dump($insert_stmt->bindParam(1, $f, SQLITE3_BLOB));
+var_dump($insert_stmt->execute());
+
+var_dump($insert_stmt->close());
+fclose($f);
+
+?>
++++DONE+++
+--EXPECTF--
+bool(true)
+bool(true)
+object(SQLite3Result)#%d (%d) {
+}
+bool(true)
++++DONE+++