Fix GH-22200: stream api memory leaks.

adding reproducer.

Fix #22200

Author: devnexen

ext/standard/tests/streams/gh22200.phpt

@@ -0,0 +1,22 @@
+--TEST--
+GH-22200 (Memory leaks in the stream errors code on reentrant error handler)
+--FILE--
+<?php
+
+// When the warning emitted for the failing outer stream operation is reported,
+// php_stream_error_operation_end() has already popped the operation off the
+// stack. The user error handler then runs another stream operation, which
+// reuses the same operation pool slot and orphans the in-flight error entry,
+// leaking it.
+set_error_handler(function ($errno, $errstr) {
+    @file_get_contents(__DIR__ . '/gh22200-does-not-exist-inner');
+    return true;
+});
+
+file_get_contents(__DIR__ . '/gh22200-does-not-exist-outer');
+
+echo "done\n";
+
+?>
+--EXPECT--
+done