Dmitry Timoshkov : ieframe: Clear a being invalidated history entry.

[Alexandre Julliard]

Module: wine
Branch: stable
Commit: fc64e5ab42efd361b829a713ae8afdb6e67cf9ec
URL:    https://gitlab.winehq.org/wine/wine/-/commit/fc64e5ab42efd361b829a713ae8afdb...

Author: Dmitry Timoshkov 
Date:   Mon Jan 24 17:04:45 2022 +0300

ieframe: Clear a being invalidated history entry.

update_travellog() in order to clear forward history calls free_travellog_entry() to
invalidate forward history entries, and when later an entry gets reused entry->stream
contains a no longer valid pointer.

Signed-off-by: Dmitry Timoshkov 
Signed-off-by: Jacek Caban 
Signed-off-by: Alexandre Julliard 
(cherry picked from commit 41cfc86d8dd65c71a7c81b826d02ac0a99050d6a)
Signed-off-by: Michael Stefaniuc

---

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

diff --git a/dlls/ieframe/dochost.c b/dlls/ieframe/dochost.c
index 042417b5b17..1ba31c552ed 100644
--- a/dlls/ieframe/dochost.c
+++ b/dlls/ieframe/dochost.c
@@ -384,9 +384,12 @@ static LRESULT WINAPI doc_view_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM l

static void free_travellog_entry(travellog_entry_t *entry)
 {
-    if(entry->stream)
+    if(entry->stream) {
         IStream_Release(entry->stream);
+        entry->stream = NULL;
+    }
     heap_free(entry->url);
+    entry->url = NULL;
 }

static IStream *get_travellog_stream(DocHost *This)