gh-135854: Fix function email.message.Message.get_boundary strips boundaries twice
#254780
| Job | Run time |
|---|---|
| 4s | |
| 3s | |
| 7s |
email.message.Message.get_boundary strips boundaries twice
#254780
| Job | Run time |
|---|---|
| 4s | |
| 3s | |
| 7s |