ntdll: Only build the wow64 function table on 64-bit.

dlls/ntdll/unix/loader.c

@@ -2136,6 +2136,8 @@ const unixlib_entry_t __wine_unix_call_funcs[] =
 };
 
 
+#ifdef _WIN64
+
 static NTSTATUS wow64_load_so_dll( void *args ) { return STATUS_INVALID_IMAGE_FORMAT; }
 static NTSTATUS wow64_init_builtin_dll( void *args ) { return STATUS_UNSUCCESSFUL; }
 static NTSTATUS wow64_unwind_builtin_dll( void *args ) { return STATUS_UNSUCCESSFUL; }
@@ -2151,6 +2153,7 @@ const unixlib_entry_t __wine_unix_call_wow64_funcs[] =
     system_time_precise,
 };
 
+#endif  /* _WIN64 */
 
 /***********************************************************************
  *           start_main_thread

dlls/ntdll/unix/virtual.c

@@ -647,7 +647,11 @@ static NTSTATUS get_builtin_unix_funcs( void *module, BOOL wow, const void **fun
 
     if (module == ntdll_module)
     {
+#ifdef _WIN64
         *funcs = wow ? __wine_unix_call_wow64_funcs : __wine_unix_call_funcs;
+#else
+        *funcs = __wine_unix_call_funcs;
+#endif
         return STATUS_SUCCESS;
     }
 
@@ -657,7 +661,11 @@ static NTSTATUS get_builtin_unix_funcs( void *module, BOOL wow, const void **fun
         if (builtin->module != module) continue;
         if (builtin->unix_path && (p = strrchr( builtin->unix_path, '/' )) && !strcmp( p, "/ntdll.so" ))
         {
+#ifdef _WIN64
             *funcs = wow ? __wine_unix_call_wow64_funcs : __wine_unix_call_funcs;
+#else
+            *funcs = __wine_unix_call_funcs;
+#endif
             status = STATUS_SUCCESS;
             break;
         }