Alexandre Julliard : user.exe: Make sure that the thunk selector doesn't get freed.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 879ccd33572170e9bcb00d5a45cf65b2ca675439
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=879ccd33572170e9bcb00d5a4...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Thu Jan 20 11:07:20 2022 +0100

user.exe: Make sure that the thunk selector doesn't get freed.

Spotted by Fabian Maurer.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=12732
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/user.exe16/message.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dlls/user.exe16/message.c b/dlls/user.exe16/message.c
index 1b4bf9afbd8..5d388a55312 100644
--- a/dlls/user.exe16/message.c
+++ b/dlls/user.exe16/message.c
@@ -161,6 +161,7 @@ static WNDPROC16 alloc_win16_thunk( WNDPROC handle )
         if (!(thunk_selector = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT,
                                               MAX_WINPROCS16 * sizeof(WINPROC_THUNK) )))
             return NULL;
+        FarSetOwner16( thunk_selector, 0 );
         PrestoChangoSelector16( thunk_selector, thunk_selector );
         thunk_array = GlobalLock16( thunk_selector );
         relay = GetProcAddress16( GetModuleHandle16("user"), "__wine_call_wndproc" );