Sean McBride authored Nov 27, 2012 and Brad King committed Nov 29, 2012

Some compilers, notably Clang, will warn at compile time (or
runtime with debug flags) if they detect a null dereference.
Try to outsmart them by dereferencing an address a little
larger than NULL.

Change-Id: I53c6512f814ad3e8977c076904f0415e8aaaaea5