mod_sasl2_fast: Improve handling when SASL profile unexpectedly lacks CB
This fixes a traceback reported by riau, but likely does not solve the
underlying cause, whatever that is.
# https://editorconfig.org/
root = true
[*]
charset = utf-8
end_of_line = lf
indent_style = tab
insert_final_newline = true
trim_trailing_whitespace = true
max_line_length = 150
[*.json]
# json_pp -json_opt canonical,pretty
indent_size = 3
indent_style = space
[{README,COPYING,CONTRIBUTING,TODO}{,.markdown,.md}]
# pandoc -s -t markdown
indent_size = 4
indent_style = space
[*.py]
indent_size = 4
indent_style = space
[*.{xml,svg}]
# xmllint --nsclean --encode UTF-8 --noent --format -
indent_size = 2
indent_style = space
[*.yaml]
indent_size = 2
indent_style = space