[3.12] gh-105375: Improve error handling in PyUnicode_BuildEncodingMap() (GH-105491) (#105661)

Bail on first error to prevent exceptions from possibly being overwritten.
(cherry picked from commit 555be81026fe1205d16c02f6321221381174cd07)

Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com>

Miss Islington (bot) committed 2y ago

ed038953fc2316117a3eaad066b93b0348131fd8

Parent: db5022c

Committed by GitHub <noreply@github.com> on 6/11/2023, 8:01:18 PM