round-robin.sh: Fix shellcheck warnings

* Disable "referenced but not assigned"
  for a bunch of parameters. These are
  set by the wrappers around this script.
* Quote a bunch of expansions
* Use * to get a string from arrays
* When finding files split by null terminator
  so it doesn't break for filenames with spaces.
* Declare and assign separately so we don't
  hide return values.
* Ignore unsafe rm in prepare_abe since we know
  we'll be in the abe folder.
* Add sanity check that pwd isn't / for build_llvm,
  then ignore the warning from the rm.

Change-Id: I0b54e55946d56eef0d48b10c3ccfa30059809d46

0 files changed, 0 insertions, 0 deletions