Fix #79514: Memory leaks while including unexistent file

We have to destroy (un-opened) ZEND_HANDLE_FILENAMEs.

NEWS

@@ -6,6 +6,8 @@ PHP                                                                        NEWS
 - Core:
   . Fixed bug #78434 (Generator yields no items after valid() call). (Nikita)
   . Fixed bug #79477 (casting object into array creates references). (Nikita)
+  . Fixed bug #79514 (Memory leaks while including unexistent file). (cmb,
+    Nikita)
 
 - DOM:
   . Fixed bug #78221 (DOMNode::normalize() doesn't remove empty text nodes).

Zend/tests/bug79514.phpt

@@ -0,0 +1,13 @@
+--TEST--
+Bug #79514 (Memory leaks while including unexistent file)
+--FILE--
+<?php
+$mem1 = memory_get_usage(true);
+for ($i = 0; $i < 100000; $i++) {
+    @include __DIR__ . '/bug79514.doesnotexist';
+}
+$mem2 = memory_get_usage(true);
+var_dump($mem2 - $mem1 < 100000);
+?>
+--EXPECT--
+bool(true)

Zend/zend_stream.c

@@ -238,6 +238,8 @@ ZEND_API int zend_compare_file_handles(zend_file_handle *fh1, zend_file_handle *
 		return 0;
 	}
 	switch (fh1->type) {
+		case ZEND_HANDLE_FILENAME:
+			return strcmp(fh1->filename, fh2->filename) == 0;
 		case ZEND_HANDLE_FP:
 			return fh1->handle.fp == fh2->handle.fp;
 		case ZEND_HANDLE_STREAM: