Fix allocation counting in clean_v2_descs_as_dir test.

[tor.git] / changes / ticket32500

  o Testing:
    - Require C99 standards-conforming code in Travis CI, but allow GNU gcc
      extensions. Also activates clang's -Wtypedef-redefinition warnings.
      Build some jobs with -std=gnu99, and some jobs without.
      Closes ticket 32500.