CRAS: Make DL_FOREACH safe for deleting.
CRAS: Make DL_FOREACH safe for deleting.

It is easy to forget changing DL_FOREACH to DL_FOREACH_SAFE when modifying
code inside the loop, so just make DL_FOREACH safe and only use it.

BUG=none
TEST=make check

Change-Id: I3a0f5a3f1f12a5343149173295eb76ef8b6e3e62
Reviewed-on: https://chromium-review.googlesource.com/171703
Reviewed-by: Dylan Reid <c791bfe44996c1eed9c7149a0c5f12a86d58eb85@chromium.org>
Commit-Queue: Dylan Reid <c791bfe44996c1eed9c7149a0c5f12a86d58eb85@chromium.org>
Tested-by: Dylan Reid <c791bfe44996c1eed9c7149a0c5f12a86d58eb85@chromium.org>

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