[3.15.0a8] Build error if specialization is disabled

[cdce8p]

Bug report

Bug description:

Set ENABLE_SPECIFICATION = 0 and run make.

cpython/Include/internal/pycore_code.h

Line 301 in d206d42

#define ENABLE_SPECIALIZATION 1

Python/specialize.c:119:31: error: use of undeclared identifier 'opcode'
  119 |         i += _PyOpcode_Caches[opcode];
      |                               ^
1 error generated.
make: *** [Python/specialize.o] Error 1

The bug was introduced in 879c85f, released with 3.15.0a8.

CPython versions tested on:

CPython main branch

Operating systems tested on:

macOS

Linked PRs

• gh-148825: Fix build error if specialization is disabled #148826