Gabriel Ivăncescu : mshtml: Fix nsparser leak if script_elem_from_nsscript failed.

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: 5233c1a6a997e87047d8dba7278bd0841e26281b
URL:    https://gitlab.winehq.org/wine/wine/-/commit/5233c1a6a997e87047d8dba7278bd08...

Author: Gabriel Ivăncescu 
Date:   Mon Mar 20 19:44:58 2023 +0200

mshtml: Fix nsparser leak if script_elem_from_nsscript failed.

Signed-off-by: Gabriel Ivăncescu 
(cherry picked from commit 541257b0a20440a8f1e6e7376fc8593d08b3f32a)

---

dlls/mshtml/mutation.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dlls/mshtml/mutation.c b/dlls/mshtml/mutation.c
index e308c1af31b..f29f9e50226 100644
--- a/dlls/mshtml/mutation.c
+++ b/dlls/mshtml/mutation.c
@@ -343,8 +343,11 @@ static nsresult run_insert_script(HTMLDocumentNode *doc, nsISupports *script_ifa

hres = script_elem_from_nsscript(nsscript, &script_elem);
     nsIDOMHTMLScriptElement_Release(nsscript);
-    if(FAILED(hres))
+    if(FAILED(hres)) {
+        if(nsparser)
+            nsIParser_Release(nsparser);
         return NS_ERROR_FAILURE;
+    }

if(nsparser) {
         nsIParser_BeginEvaluatingParserInsertedScript(nsparser);