Detect Null pointer.  Assert if null, else don't crash here.  Bug 97887.
Detect Null pointer.  Assert if null, else don't crash here.  Bug 97887.

nmav/nss,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,nmav/nss,ekr/nss-old,nmav/nss,ekr/nss-old,ekr/nss-old,ekr/nss-old,ekr/nss-old,ekr/nss-old,nmav/nss