ntdll: Don't try to unmap system views on the server side.

dlls/ntdll/virtual.c

@@ -3074,6 +3074,8 @@ NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
     server_enter_uninterrupted_section( &csVirtual, &sigset );
     if ((view = VIRTUAL_FindView( addr, 0 )) && !is_view_valloc( view ))
     {
+        if (!(view->protect & VPROT_SYSTEM))
+        {
             SERVER_START_REQ( unmap_view )
             {
                 req->base = wine_server_client_ptr( view->base );
@@ -3081,6 +3083,9 @@ NTSTATUS WINAPI NtUnmapViewOfSection( HANDLE process, PVOID addr )
             }
             SERVER_END_REQ;
             if (!status) delete_view( view );
+            else FIXME( "failed to unmap %p %x\n", view->base, status );
+        }
+        else delete_view( view );
     }
     server_leave_uninterrupted_section( &csVirtual, &sigset );
     return status;