Many places have missing `PyErr_NoMemory()` call after failing memory allocation

Crash report

1. remove_unused_consts in Python/flowgraph.c

When PyMem_Malloc(nconsts * sizeof(Py_ssize_t)); fails, we need to set an exception.

https://github.com/python/cpython/blob/29a920e80e21490b5bdb7178373f80fe606a4403/Python/flowgraph.c#L3267-L3283

2. gethandlelist and getattributelist in _winapi.c

This place misses it:

https://github.com/python/cpython/blob/9fdbade99e6bcc607d9f12416bfca5bbf94022b9/Modules/_winapi.c#L1196-L1198

All other error paths set exceptions, except this if:

https://github.com/python/cpython/blob/9fdbade99e6bcc607d9f12416bfca5bbf94022b9/Modules/_winapi.c#L1278-L1282

3. _channelends_new in Modules/_interpchannelsmodule.c

https://github.com/python/cpython/blob/3ca93ab198497da9451101019b67c52e7873377d/Modules/_interpchannelsmodule.c#L920-L926

Later we check for errors in handle_channel_error, it requires either setting err to non -1 or to set Python exception. Both are false, it fails with the assertion failure.

Linked PRs

• gh-151127
• gh-151134
• gh-151135
• gh-151136
• gh-151137
• gh-151154
• gh-151180
• gh-151181
• gh-151182
• gh-151239
• gh-151265
• gh-151266
• gh-151336
• gh-151338
• gh-151339
• gh-151360
• gh-151361
• gh-151362
• gh-151382
• gh-151398
• gh-151399
• gh-151400
• gh-151580
• gh-151582
• gh-151588
• gh-151590
• gh-151624
• gh-151639
• gh-152014
• gh-152015
• gh-152016
• gh-152169
• gh-152170
• gh-152177
• gh-152179
• gh-152180
• gh-152181
• gh-152182
• gh-152183
• gh-152184
• gh-152418
• gh-152420
• gh-152421
• gh-152422
• gh-152478
• gh-152677
• gh-152678
• gh-152720
• gh-153215
• gh-153708
• gh-153709
• gh-153710
• gh-153765
• gh-156292
• gh-156299
• gh-156301