From 0414fff205bad752573a4b2176d9f08afd096196 Mon Sep 17 00:00:00 2001
From: Anatol Belski <ab@php.net>
Date: Fri, 17 Aug 2018 16:22:35 +0200
Subject: [PATCH] Fix memory leak

---
 ext/dom/document.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/ext/dom/document.c b/ext/dom/document.c
index aba43f1385..9f9ce5e2f8 100644
--- a/ext/dom/document.c
+++ b/ext/dom/document.c
@@ -2175,11 +2175,16 @@ PHP_FUNCTION(dom_document_save_html)
 		}
 
 		buf = xmlBufferCreate();
-		outBuf = xmlOutputBufferCreateBuffer(buf, NULL);
-		if (!outBuf || !buf) {
+		if (!buf) {
 			php_error_docref(NULL, E_WARNING, "Could not fetch buffer");
 			RETURN_FALSE;
 		}
+		outBuf = xmlOutputBufferCreateBuffer(buf, NULL);
+		if (!outBuf) {
+			xmlBufferFree(buf);
+			php_error_docref(NULL, E_WARNING, "Could not fetch output buffer");
+			RETURN_FALSE;
+		}
 
 		if (node->type == XML_DOCUMENT_FRAG_NODE) {
 			for (node = node->children; node; node = node->next) {
@@ -2205,6 +2210,7 @@ PHP_FUNCTION(dom_document_save_html)
 			RETVAL_FALSE;
 		}
 		xmlOutputBufferClose(outBuf);
+		xmlBufferFree(buf);
 	} else {
 		int size = 0;
 #if LIBXML_VERSION >= 20623
-- 
2.40.0