[reactos] 01/01: [RPCRT4] Fix implicit in attribute handling in write_param_fs()

[Serge Gautherie]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=1723c223e3032fcc460e7…

commit 1723c223e3032fcc460e7c212ab5b72be9238351
Author:     Serge Gautherie <reactos-git_serge_171003(a)gautherie.fr>
AuthorDate: Mon May 24 08:56:17 2021 +0200
Commit:     Stanislav Motylkov <x86corez(a)gmail.com>
CommitDate: Thu Jan 6 03:48:29 2022 +0300

    [RPCRT4] Fix implicit in attribute handling in write_param_fs()
    
    Cherry-pick wine-5.0-rc1-50-g1aaf870 by Jacek Caban.
   
https://source.winehq.org/git/wine.git/?a=commit;h=1aaf870039dfb8419ae060d8…
    
    (OLEAUT32_WINETEST part shall be imported later.)
    
    CORE-17884
---
 dll/win32/rpcrt4/ndr_typelib.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/dll/win32/rpcrt4/ndr_typelib.c b/dll/win32/rpcrt4/ndr_typelib.c
index ac101067c8d..5aa98bb9c7b 100644
--- a/dll/win32/rpcrt4/ndr_typelib.c
+++ b/dll/win32/rpcrt4/ndr_typelib.c
@@ -1029,16 +1029,18 @@ static HRESULT write_param_fs(ITypeInfo *typeinfo, unsigned char
*type,
         BOOL is_return, unsigned short *stack_offset)
 {
     USHORT param_flags = desc->paramdesc.wParamFlags;
-    int is_in  = param_flags & PARAMFLAG_FIN;
-    int is_out = param_flags & PARAMFLAG_FOUT;
     TYPEDESC *tdesc = &desc->tdesc, *tfs_tdesc;
     unsigned short server_size;
     unsigned short stack_size = get_stack_size(typeinfo, tdesc);
     unsigned char basetype;
     unsigned short flags;
+    int is_in, is_out;
     size_t off = 0;
     HRESULT hr;
 
+    is_out = param_flags & PARAMFLAG_FOUT;
+    is_in = (param_flags & PARAMFLAG_FIN) || (!is_out && !is_return);
+
     hr = get_param_info(typeinfo, tdesc, is_in, is_out, &server_size, &flags,
             &basetype, &tfs_tdesc);