Bug 614076 - Implement HKDF in Softoken fix 1. hashLen is uninitialized. 2. the derive sensitivity check is missing.
Bug 614076 - Implement HKDF in Softoken
fix
1. hashLen is uninitialized.
2. the derive sensitivity check is missing.

patch by bsmith
r=rrelyea

thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss,thespooler/nss