[PATCH 1/2] gdb: testsuite: fix failed testcases in gdb.base/charset.exp

[Simon Marchi]

>> Yes, that is fine with me (it is pre-approved, you can push it right
>> away, just make sure to send a notification on the mailing list).
> 
> Done. Thank you!

Thanks, and I look forward to see what's the root cause of the problem
on LoongArch!

Simon