False failure in `title-format` rule

[richardlau]

https://travis-ci.com/nodejs/node/jobs/165397175#L478-L491

*** Commit message for 793eb528fc is:
src: use std::vector for setting up process.execPath

Use `std::vector` as an RAII-style alternative to allocating
and deleting raw memory storage.

+npx -q core-validate-commit --no-validate-metadata 793eb528fc8a0e5b9e4d63e268080c8e90978a2b
  ✖  793eb528fc8a0e5b9e4d63e268080c8e90978a2b
     ✔  0:0      skipping fixes-url                        fixes-url
     ✔  0:0      blank line after title                    line-after-title
     ✔  0:0      line-lengths are valid                    line-length
     ✔  0:0      valid subsystems                          subsystem
     ✖  0:13     Add a space after subsystem(s).           title-format
     ⚠  0:50     Title should be <= 50 columns.            title-length