Prevent runner to be stealth with long logs.

Merged username-removed-145391 requested to merge PuckCh/gitlab-ci-multi-runner:master into master

If the log is longer than maxTraceOutputSize, the runner will be paused and waiting forever. This ia because the reader stop reading the pipe, and the pipes has a size limit.

I have already proposed a patch in the past for this. The patch was adapted, but unfortunately, an important "break" was not removed in the adaptation.

This patch remove the unwanted break, allowing the for loop to continue to run and flushing the pipe buffer.