Issue #22218: Fix "comparison between signed and unsigned integers" warnings in
socketmodule.c.
Issue #22218: Fix "comparison between signed and unsigned integers" warnings in
Modules/_pickle.c.
Issue #22218: Fix "comparison between signed and unsigned integers" warning in
Modules/_sqlite/cursor.c.
Optimize PyBytes_FromObject(): only overallocate when size=0 to not get the
empty string singleton
_pickle: Optimize raw_unicode_escape(), use directly a bytes object, don't use
a temporary bytearray object.