Fabian Maurer : user32/menu: Release menu in HiliteMenuItem() to avoid deadlock.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: a9ac425a903968f74f074eba06863b913ba7dffc
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=a9ac425a903968f74f074eba06863b913ba7dffc

Author: Fabian Maurer <dark.shadow4 at web.de>
Date:   Fri Jul 20 16:29:43 2018 +0200

user32/menu: Release menu in HiliteMenuItem() to avoid deadlock.

MENU_SelectItem sends a message, and we must not hold the lock when
that happens

Signed-off-by: Fabian Maurer <dark.shadow4 at web.de>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/user32/menu.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/dlls/user32/menu.c b/dlls/user32/menu.c
index bae4500..3b1e3f2 100644
--- a/dlls/user32/menu.c
+++ b/dlls/user32/menu.c
@@ -3859,17 +3859,23 @@ BOOL WINAPI HiliteMenuItem( HWND hWnd, HMENU hMenu, UINT wItemID,
 {
     POPUPMENU *menu;
     UINT pos;
+    HMENU handle_menu;
+    UINT focused_item;
 
     TRACE("(%p, %p, %04x, %04x);\n", hWnd, hMenu, wItemID, wHilite);
 
     if (!(menu = find_menu_item(hMenu, wItemID, wHilite, &pos))) return FALSE;
 
-    if (menu->FocusedItem != pos)
+    handle_menu = menu->obj.handle;
+    focused_item = menu->FocusedItem;
+    release_menu_ptr(menu);
+
+    if (focused_item != pos)
     {
-        MENU_HideSubPopups( hWnd, menu->obj.handle, FALSE, 0 );
-        MENU_SelectItem( hWnd, menu->obj.handle, pos, TRUE, 0 );
+        MENU_HideSubPopups( hWnd, handle_menu, FALSE, 0 );
+        MENU_SelectItem( hWnd, handle_menu, pos, TRUE, 0 );
     }
-    release_menu_ptr(menu);
+
     return TRUE;
 }