Revert "replace incorrect strscpy use in FORTIFY_SOURCE"

This reverts commit 4c5c1c70.

The author attribution is incorrect and will be corrected soon.

Change-Id: I97767788e2ca5a827ffd2f4730877f211382826e
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>