Alexandre Julliard : ntdll: Don't return a default Unix handle for modules that don't have a Unix library.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 456e76185d0ba5895fd2b498ec5534cc9f27f935
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=456e76185d0ba5895fd2b498e...

Author: Alexandre Julliard <julliard(a)winehq.org>
Date:   Tue Dec  7 15:10:41 2021 +0100

ntdll: Don't return a default Unix handle for modules that don't have a Unix library.

Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/ntdll/unix/virtual.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index 5873a3e2335..259968a890c 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -655,8 +655,11 @@ static NTSTATUS get_builtin_unix_funcs( void *module, BOOL wow, void **funcs )
     LIST_FOR_EACH_ENTRY( builtin, &builtin_modules, struct builtin_module, entry )
     {
         if (builtin->module != module) continue;
-        *funcs = dlsym( builtin->unix_handle, ptr_name );
-        status = *funcs ? STATUS_SUCCESS : STATUS_ENTRYPOINT_NOT_FOUND;
+        if (builtin->unix_handle)
+        {
+            *funcs = dlsym( builtin->unix_handle, ptr_name );
+            status = *funcs ? STATUS_SUCCESS : STATUS_ENTRYPOINT_NOT_FOUND;
+        }
         break;
     }
     server_leave_uninterrupted_section( &virtual_mutex, &sigset );