refactor wolfSSL_CTX_set_srp_username

[effbiae]

Description

have wolfSSL_CTX_set_srp_username() call wolfSSL_CTX_set_srp_password() instead of duplicating code.

Testing

./configure --enable-opensslextra --enable-srp --enable-all && make check

Checklist

• added tests
• updated/added doxygen
• updated appropriate READMEs
• Updated manual and documentation

[devin-ai-integration]

🛟 Devin Lifeguard found 1 likely issues in this PR

• free-allocated-memory snippet: Verify in wolfSSL_CTX_set_srp_password() whether ctx->srp_password is freed/re-used; if not, restore the XFREE(ctx->srp_password, ctx->heap, DYNAMIC_TYPE_SRP) after the helper call to avoid leaking the earlier allocation.

@effbiae
please take a look at the above issues which Devin flagged. Devin will not fix these issues automatically.

[wolfSSL-Bot]

Can one of the admins verify this patch?

[dgarske]

Okay to test. Contributor agreement on file.

[dgarske]

Jenkins retest this please. FIPS v2 PAA error (not related to PR and is intermittent).

[SparkiDev]

Found a funny in wolfSSL_CTX_set_srp_password when comparing the code.
Please fix that too.

Fixed