Fix cycle leak in sqlite3 setAuthorizer()

Closes GH-17903.

Author: nielsdos

NEWS

@@ -48,6 +48,7 @@ PHP                                                                        NEWS
 - PDO_SQLite:
   . Fixed GH-17837 ()::getColumnMeta() on unexecuted statement segfaults).
     (cmb)
+  . Fix cycle leak in sqlite3 setAuthorizer(). (nielsdos)
 
 - Phar:
   . Fixed bug GH-17808: PharFileInfo refcount bug. (nielsdos)

ext/sqlite3/sqlite3.c

@@ -2256,14 +2256,16 @@ static HashTable *php_sqlite3_get_gc(zend_object *object, zval **table, int *n)
 {
 	php_sqlite3_db_object *intern = php_sqlite3_db_from_obj(object);
 
-	if (intern->funcs == NULL && intern->collations == NULL) {
+	if (intern->funcs == NULL && intern->collations == NULL && !ZEND_FCC_INITIALIZED(intern->authorizer_fcc)) {
 		/* Fast path without allocations */
 		*table = NULL;
 		*n = 0;
 		return zend_std_get_gc(object, table, n);
 	} else {
 		zend_get_gc_buffer *gc_buffer = zend_get_gc_buffer_create();
 
+		php_sqlite3_gc_buffer_add_fcc(gc_buffer, &intern->authorizer_fcc);
+
 		php_sqlite3_func *func = intern->funcs;
 		while (func != NULL) {
 			php_sqlite3_gc_buffer_add_fcc(gc_buffer, &func->func);

ext/sqlite3/tests/setauthorizer_cycle_leak.phpt

@@ -0,0 +1,21 @@
+--TEST--
+setAuthorizer() cycle leak
+--EXTENSIONS--
+sqlite3
+--FILE--
+<?php
+class Foo extends Sqlite3 {
+    public function __construct() {
+        parent::__construct(":memory:");
+        $this->setAuthorizer([$this, "foo"]);
+    }
+
+    public function foo() {}
+}
+
+$test = new Foo;
+
+echo "Done\n";
+?>
+--EXPECT--
+Done