Jacek Caban : wow64win: Convert parameters in place in wow64_NtUserCallWinProc.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 2149bdfda785937329a5baeddb5d84e3a74434f2
URL:    https://gitlab.winehq.org/wine/wine/-/commit/2149bdfda785937329a5baeddb5d84e...

Author: Jacek Caban <jacek(a)codeweavers.com>
Date:   Sun Jul 16 17:56:05 2023 +0200

wow64win: Convert parameters in place in wow64_NtUserCallWinProc.

---

 dlls/wow64win/user.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/dlls/wow64win/user.c b/dlls/wow64win/user.c
index 553d40a8f29..c5506304718 100644
--- a/dlls/wow64win/user.c
+++ b/dlls/wow64win/user.c
@@ -615,19 +615,15 @@ static NTSTATUS WINAPI wow64_NtUserCallWinEventHook( void *arg, ULONG size )
 static NTSTATUS WINAPI wow64_NtUserCallWinProc( void *arg, ULONG size )
 {
     struct win_proc_params *params = arg;
-    struct win_proc_params32 params32_buf, *params32 = ¶ms32_buf;
+    struct win_proc_params32 *params32 = arg;
     LRESULT result = 0;
     void *ret_ptr;
     ULONG ret_len;
     NTSTATUS status;
 
-    if (size > sizeof(*params))
-    {
-        if (!(params32 = Wow64AllocateTemp( size - sizeof(*params) + sizeof(*params32) )))
-            return 0;
-        memcpy( params32 + 1, params + 1, size - sizeof(*params) );
-    }
     win_proc_params_64to32( params, params32 );
+    if (size > sizeof(*params))
+        memmove( params32 + 1, params + 1, size - sizeof(*params) );
 
     status = Wow64KiUserCallbackDispatcher( NtUserCallWinProc, params32,
                                             size - sizeof(*params) + sizeof(*params32),