[PATCH 2/5] ntdll: Make __wine_unix_call() return STATUS_NOT_IMPLEMENTED in case of NULL pointer.

[Davide Beatrici]

From: Davide Beatrici

Previously, an attempted NULL call returned the very generic STATUS_ACCESS_VIOLATION.
---
 dlls/ntdll/unix/loader.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/loader.c b/dlls/ntdll/unix/loader.c
index deb25a8e35e..14fe1229723 100644
--- a/dlls/ntdll/unix/loader.c
+++ b/dlls/ntdll/unix/loader.c
@@ -1329,7 +1329,11 @@ NTSTATUS ntdll_init_syscalls( ULONG id, SYSTEM_SERVICE_TABLE *table, void **disp
  */
 NTSTATUS WINAPI __wine_unix_call( unixlib_handle_t handle, unsigned int code, void *args )
 {
-    return ((unixlib_entry_t*)(UINT_PTR)handle)[code]( args );
+    unixlib_entry_t *funcs = (unixlib_entry_t*)(UINT_PTR)handle;
+    if (funcs[code])
+        return funcs[code](args);
+
+    return STATUS_NOT_IMPLEMENTED;
 }